Specimen and photo by Arkenstone / www.iRocks.com. The texture of the rocks changes from slates and phyllites … Friends had told me that the whole hillside south of the where we were to collect was rich with staurolite, not just up at the top where I had collected earlier. Staurolite also has a 7-7.5 on the Mohs Hardness Scale. The crystals are mostly translucent, rarely transparent. Staurolite "fairy crosses": Staurolite crystals are often collected, made into jewelry, and sold as souvenirs or "good luck" charms. Staurolite can be found in the Blue Ridge Mountains of Virginia, as well as in North Carolina, which is a major source of the gem. Occasionally it is found in some pegmatites and contact metamorphic rocks. and NW NE sec. These staurolite crystals can be found on the ground floor of the Keck Museum in case number nine. The cruciform crystals have often stirred religious beliefs and superstitions. Staurolite, being a metamorphic mineral, is found useful by … Staurolite typically forms cross shaped twinned crystals, and has been called Fairy Cross or Fairy Stone. 29 T.40N. Staurolite is made of iron aluminum silicate crystals. Staurolite typically occurs in medium-grade schists and gneisses, often in association with … Staurolite gets its name from two Greek words, stauros meaning cross, and lithos, meaning stone. R.4E. Menu ... Those rocks which contain andalusite and staurolite are sometimes found in such associations as show that they are due to contact action by intrusive igneous masses. This specimen of schist has one pair of staurolite crystals forming a 90-degree penetration twin (lower right) and another pair forming the more typical 60-degree penetration twin (upper left, partially embedded). Rarely transparent. Hammers, Chisels, Loupes, Cotton-filled boxes, etc. We strive for accurate content and locality information. Staurolite is a metamorphic mineral that is found almost exclusively in medium-grade schists. Staurolite and kyanite are commonly associated in medium-grade pelitic rocks. The schist belongs to the Little Falls Formation of the 1.7 GA old Penokean orogeny. The Fairy Cross, is a natural phenomenon found in Staurolite often occurs twinned in a characteristic cross-shape, called cruciform penetration twinning. © Copyright 1997 - 2021 Hershel Friedman and Minerals.net, all rights reserved. Staurolite is a characteristic mineral of crystalline schists, and it is also a product of contact-meta- morphism. Color: yellowish-brown, reddish-brown, brown to black, more rarely red and dark blue. ; considerable finds were … Staurolite, kyanite, and sillimanite only occur in the staurolite, kyanite, and sillimanite zones, respectively. Whereas, staurolite is a mineral found in old crystalline rocks and is particularly well known and abundant in north Georgia; and. Staurolite is most commonly found in Fannin County, Georgia. Staurolite brings the body, mind and spirit into alignment so that you can achieve total health. 26 T.39N. Reddish … 60 degrees is more common.) Crystals can be up to about 4 cm. Many studies on the staurolite have been conducted in years past, by both professional and non-professional groups. Others are cross-shaped models manufactured for the tourist trade. There are 1218 staurolite for sale on Etsy, and they cost $33.33 on average. Particularly abundant in north Georgia, the distinctively twinned, crossed crystals have been collected for generations as good luck charms. The best way to learn about minerals is to study with a collection of small specimens that you can handle, examine, and observe their properties. It occurs with almandine garnet, micas, kyanite; as well as albite, biotite, and sillimanite in gneiss and schist of regional metamorphic rocks. It is the state mineral of Georgia, with a large locality in the Fannin County region. It is often found in association with almandine garnet, muscovite and kyanite - minerals that form under similar temperature and pressure conditions. The staurolite is also known as a "Fairy Stone" due to a Virginian legend about the origin of the stone's curious shape. Staurolite can be found in the Blue Ridge Mountains of Virginia, as well as in North Carolina, which is a major source of the gem. Staurolite is a metamorphic mineral typical of medium-temperature conditions (characteristic of the upper part of the amphibolite sedimentary deposits), associated with garnet, kyanite, tourmaline, and sillimanite. Due to its resistance to chemical weathering, staurolite can be found in clastic sediments and it is a common constituent of heavy mineral assemblages. Specimen is approximately 4 inches (10 centimeters) across. It is nearly pure albite in the chlorite and biotite zones, and becomes somewhat more calcic (oligoclase) in higher grade zones. kyanite and staurolite are often found in parallel intergrowth. The composition of the plagioclase changes with increasing grade of metamorphism. It is a rare, mysterious and mystical mineral; shaped by Nature into unique forms, each an individual work of art. In locations where staurolite is found as well-formed cruciform twinned crystals, it is sometimes collected, sold as a souvenir, made into jewelry, and used as an ornament. Staurolite and kyanite are commonly associated in medium-grade pelitic rocks. The schist belongs to the Little Falls Formation of the 1.7 GA old Penokean orogeny. Staurolite has a tendency to “twin”, or have intergrown pairs of crystals. SHAWANO COUNTY: Staurolite mica schist was reported from the Menominee region in the northern part of the county by Irving (1883). However, staurolite crystals are elongated prisms that often occur as twinned intergrown crystals to form a distinctive cross pattern. Dictionary ! 14 T.30N. VILAS COUNTY: Staurolite was reported in drill core samples … Occurrence: Staurolite is found in medium-grade pelitic metamorphic rock, and is used as an index mineral in metamorphic zoning. with a resinous to vitreous luster. Basic aluminum iron silicate, often with magnesium and sometimes with zinc and lithium. Staurolite is found in the gravels along the Mississippi river, just downstream from the Blanchard Dam, but also embedded in schists in outcrops in the area. It is found in medium-grade schists and gneisses with garnet, kyanite and mica. Staurolite structure consist basically of layers Al 2 SiO 5 (kyanite composition) and layers of AlFe 2 O 2 (OH) 2 alternating parallel to (010). The meaning of the name of these interesting stones, comes from the Greek word Stauros, which means cross. Staurolite is a mineral that forms stubby, brown, prismatic crystals, which are usually found embedded in a matrix of metamorphic rock such as gneiss or mica schist. Our Recommended Book Selection at Amazon.com, Financial Donations and Collection Acquisitions. typically larger than the grains of other minerals in the rock, and they often exhibit an obvious crystal structure. Go to a known staurolite region in northern Georgia such as near Blue Ridge in Fannin County. They have a large park called Fairy Stone State Park, where an abundance of this unique mineral is located. The name "staurolite" is from the Greek word "stauros," which means "cross." Another deposit is located about 330 miles to the northeast in Patrick County, Virginia. Staurolite is a mineral that is commonly found in metamorphic rocks such as schist and gneiss. About five U.S. states, and a few countries like Russia and Switzerland contain these uniquely formed metamorphic crystals in the shape of a cross or X. Obtain a map from the Georgia Department of Natural Resources or the U.S. Geological survey to help locate regions where staurolite crystals can be found. The larger stone is approximately 3/4 x 5/8; the smaller is 5/8 x 5/8. R.2W. (Fe,Mg)2Al9Si4O23(OH). Staurolite can be found all over the world, but has a very heavy presence in the United States. Occasionally it is found in some pegmatites and contact metamorphic rocks. You guessed it: brown. Other orthosilicates include zircon, staurolite, and topaz. Since then I have found in southern Canaan, at a locality in Falls Village, west of the Housatonic River (to which I was directed by Dr. Stephen Reed of Pittsfield), crystals of this mineral in a very similar, well-characterized mica schist; but in this … Apatite: … Occurrence. The mineral commonly occurs as other minerals and man-made materials. What does staurolite mean? long, their cross-shaped clusters with the angle of 60-90° and grained masses. Staurolite meeting Moonstone for the first time. Geologists tell us these special crystals were formed by very specific geothermal processes. They occur as six-sided crystals, often with penetration twins. Although the presence of staurolite can be widespread, it remains a rare mineral and only mined in few places around the world, namely the USA, Australia, Ukraine, India and Russia. Since then I have found in southern Canaan, at a locality in Falls Village, west of the Housatonic River (to which I was directed by Dr. Stephen Reed of Pittsfield), crystals of this mineral in a STAUROLITE And physical health Staurolite will strengthen and reduce muscles, it will assist with blood disorders, counteract the debilitating effects of ageing. It was associated with Christianity as a symbol for the cross and as a good luck charm. (Sims, 1989). Often called “fairy crosses,” staurolite derives its name from the Greek words stauros (cross) and lithos (stone). Tags: Staurolite, staurolite crosses, garnets, crosses, plum garnets, plum, taos, new mexico, highway 68, 68 Photos of Collector Specimens Found at this Location ( View All ) 6 Nice Staurolite On Matrix With Garnets Tao\'s New Mexico It is often found in association with almandine garnet, muscovite, and kyanite - minerals that form under similar temperature and pressure conditions. Staurolite can be found in the USA, Brazil, Switzerland, Scotland, Italy and France. It's a happy energy, and is felt to stimulate a love of life and an enthusiasm and love for nature. Large twinned crystals with rough surfaces a.re found in mica-schist in Brittany and at several places in the United States, e.g. Staurolite is also found in limited quantity as loose grains, or fragments, that have been worn away from sedimentary rocks. One of them is now Virginia's "Fairy Stone State Park," named after the stone and the legends that surround it. It ranges from transparent to opaque in diaphaneity. In some localities these twinned crystals are collected, made into jewelry, and sold under the name "fairy crosses.". Staurolite crystals can be reddish brown to brown, yellow brown, and black with a sheen. Staurolite (AKA Fairy Cross or Fairy Stone) Staurolite is considered to be one of the best of traditional "Good Luck" stones and is used when trying to find lost objects. The mineral is hosted in the Elvan granodiorite pluton (Gordienko, 1970). The staurolite crystal is often referred to as a "fairy stone" or a "fairy cross" by local residents due to its easily recognizable cross-like shape. Staurolite is a regional metamorphic mineral of intermediate to It can also be found in various locations around Brazil, England, France, Switzerland, Germany, the former USSR, Scotland, and the Middle East. Rock Type: GOLD. Since a widely circulated paper was published in … Staurolite. Staurolite is affected by retrograde metamorphism, resulting in it being mantled and partially replaced by chlorite. of staurolite are found in Salisbury, Connecticut, in mica schist " underlying" directly the Stockbridge or Canaan limestone. Staurolite being … In general, it has an isolated tetrahedral structure related to that of kyanite. He collects staurolite crystals, a smooth black stone found in rural Georgia. Because of its hardness and insolubility it is also often found in alluvial sands. Often called “fairy crosses,” staurolite derives its name from the Greek words stauros (cross) and lithos (stone). 26 T.39N. Most are single crystals, but both 60 o and 90 o twins can be found. Staurolite, etc. The Georgia state mineral, the staurolite crystal, has been found in large quantities for generations in northern Georgia. This is a lot of 2 staurolite fairy crosses, along with the box they came in. Staurolite is usually easy to identify when it occurs as visible grains in a metamorphic rock. Besides Virginia, which has the most abundance of them, they can also be found in Georgia, New Mexico, Brazil, and Switzerland. Staurolite can be found in the USA, Brazil, Switzerland, Scotland, Italy and France. Staurolite Identification: You can identify the staurolite crystals growing inside the schist rocks by looking for smooth, shiny, red brown stripes that are, on average, about 3/4 inch wide and 1 inch long. Staurolite is a metamorphic mineral typical of medium-temperature conditions (characteristic of the upper part of the amphibolite sedimentary deposits), associated with garnet, kyanite, tourmaline, and sillimanite. Did you scroll all this way to get facts about staurolite? Staurolite and kyanite: A specimen of quartzite with several brown staurolite crystals and blue crystals of kyanite. popularly called "Fairy Crosses" or "Fairy Stones." Inexpensive mineral collections are available in the Geology.com Store. The report in Nature describes two ways the staurolite might have been preserved. Staurolite is a collector's mineral, with the intergrown, A classic Staurolite locality is Pizzo Forno, Ticino, Switzerland, where elongated crystals were found in. The staurolite crystal is a natural phenomenon found in the earth at only a few places in the world. Twinned staurolite crystals: Twinned staurolite crystals in muscovite schist from Pestsovye Keivy, Keivy Mountains, Russia. Staurolite. and NW NE sec. in Patrick County, Virginia. It is usually found in the USA, Brazil, Australia, Russia, and Switzerland and exhibits brownish black, dark brown, and red-brown colors. Staurolite is used in rituals … These gemstones, on the other hand, unveils red-brown, brownish black, and dark brown colors. In Taos, some say the crosses represent the tears of angels after Christ’s crucifi xion. Translucent to opaque. Gallery [edit | edit source] Staurolite’s components. The name Staurolite is from the Greek word ‘stauros’, meaning ‘cross’. There are much smaller and some larger specimens to be found. The 'eight point star' rare double twinned Staurolite is the … Staurolite rates a 7 to 7.5 on the Mohs hardness scale and has a vitreous to resinous luster. west of Hamburg (Weidman, 1907b). Staurolite floater crystals , sometimes with good translucency, come from the alluvial s of Brittany, France, at Baud and Finistère. Staurolite is found in the United States of America, specifically the state of Georgia, and in Switzerland. If you see a selection of these for sale that are all the same size, the same shape and containing gas bubbles, they might be manufactured. It is used in geologic field work to assess the temperature-pressure Staurolite structure consist basically of layers Al 2 SiO 5 (kyanite composition) and layers of AlFe 2 O 2 (OH) 2 alternating parallel to (010). The word " staurolite" comes from a … It can also be found in various locations around Brazil, England, France, Switzerland, Germany, the former USSR, Scotland, and the Middle East. In contrast, garnet crystals characteristically form equal dimensional dodecahedrons or trapezohedrons. But some specimens of the mineral can be of unusually high quality, like those found in Fannin County. Inside the box is a card that reads: Fairy or Lucky Stones Patrick County, Va. Starolite (sic) 1926. The staurolite mineral, also known as Fairy Cross or Cross Rock, is a natural but rare phenomenon found in only a few places around the world. It’s in fact the state rock of Georgia. Outside … It is usually brown or black in color DESCRIPTION OF STAUROLITE Staurolite was found in the raremetal feldspar peg matite of the Kolmozero field, Kola peninsula. Outside of the United States, Staurolite can also be found in Russia, Austria, Brazil, Canada, China, Germany, France, Italy, and Switzerland. Staurolite is the official state mineral of the state of Georgia. Adjacent areas are … For more details on this piece and others, visit … STAUROLITE And … Staurolite. African locality must be mentioned. Crystal texture is commonly pitted and rough. Specimen and photo by Arkenstone / www.iRocks.com. It is found in the schists and gneisses of regionally metamorphosed areas and less often in quartzite or eclogite. Staurolite is a mineral that forms stubby, brown, prismatic crystals, which are usually found embedded in a matrix of metamorphic rock such as gneiss or mica schist. Staurolite is also found in limited quantity as loose grains, or fragments, that have been worn away from sedimentary rocks. Found only in rocks that have been subjected to great heat and pressure, the stones are most commonly shaped like the St. Andrew's and Roman crosses, though others are in the shape of the Maltese cross. Fânzeres, Gondomar, Porto, Portugal. Staurolite is often found with Kyanite. Another deposit is located about 330 miles to the northeast in Patrick County, Virginia. PRICE COUNTY: Staurolite has been found with sillimanite in biotite schist in drill core in the SW SW sec. Found in only select places of the world, the stone is cherished by many for its unique cross-like appearance, which generates myths wherever it’s discovered. The crystals are brown, red or yellow in color. Kyanite is often associated with other metamorphic minerals such as garnet, staurolite, and corundum. What we were looking for were rocks where the matrix had weathered away faster than the staurolite … Found in only select places of the world, the stone is cherished by many for its unique cross-like appearance, which generates myths wherever it’s discovered. Specimen and photo by Arkenstone / www.iRocks.com. kyanite and staurolite are often found in parallel intergrowth. Staurolite, being a metamorphic mineral, is found useful by … Untwinned crystals, translucent and of a rich brown colour (grenatite), are abundant in the silvery white paragonite … Small twinned crystals are also abundant at the following worldwide localities: Cattle Creek, near Mount Isa, Queensland, Australia; Antananolofotsy, Betafo District, Antananarivo Province, Madagascar; and Rubelita, Jequitinhonha valley, Minas Gerais, Brazil. A classic Staurolite locality is Pizzo Forno, Ticino, Switzerland, where elongated crystals were found in matrix associated with Kyanite. Staurolite is a mineral that is commonly found in metamorphic rocks such as schist and gneiss. Although the presence of staurolite can be widespread, it remains a rare mineral and only mined in few places around the world, namely the USA, Australia, Ukraine, India and Russia. This specimen is about three inches wide and was collected in the Bernina Pass area, near Grischun, Switzerland. This is one of the few locations in the world where these rare stones can be found. There are very few uses for staurolite. Finding … It is a rare, mysterious and mystical mineral; shaped by Nature into unique forms, each an individual work of art. About five U.S. states, and a few countries like Russia and Switzerland contain these uniquely formed metamorphic crystals in the shape of a cross or X. Staurolite stones are found in Switzerland, Russia, Australia, Brazil and the USA. Using Staurolite is said to help with calmness. It has been used as an abrasive, but that use has been replaced by The most popular color? The most common staurolite material is stone. On the other hand, its name is derived from the Greek word “stauros” that means cross. Specimen is approximately 4 inches (10 centimeters) across. 29 T.40N. The name Staurolite is from the Greek word ‘stauros’ , … PRICE COUNTY: Staurolite has been found with sillimanite in biotite schist in drill core in the SW SW sec. Fairy Stones are Staurolite crystals (especially Staurolite pseudomorph) are found in only a few places around the world. The rare staurolite stones are found elsewhere but not in such abundance as at Fairy Stone State Park. Staurolite crystals range in color from reddish brown to brown, yellow brown, and black with distinct pleochrism. Not all Staurolites exhibit perfect or clear crosses, though. Staurolite: Staurolite is a common component of metamorphic rocks that may exhibit a reddish brown color similar to many garnets. Officially, they are staurolite, the state mineral. If you see a selection of staurolite crosses offered for sale that are all the same size, same shape, and have air bubbles on close examination, they might be manufactured. Brown, grayish brown, gray, yellowish-brown, reddish brown. They have a large park called Fairy Stone State Park, where an abundance of this unique mineral is located. Staurolite is a mineral that is commonly found in metamorphic rocks such as schist and gneiss. Staurolite is found in the form of short- and long-columnar crystals up to 10 cm. Some of these items are genuine twinned staurolite crystals. Some scarcer specimens show both twin forms and can look like a blunt six rayed star. Staurolite is found in the gravels along the Mississippi river, just downstream from the Blanchard Dam, but also embedded in schists in outcrops in the area. The staurolite mineral, also known as Fairy Cross or Cross Rock, is a natural but rare phenomenon found in only a few places around the world. How to Use Staurolite… Staurolite is a silicate mineral with a generalized chemical composition of In 1976, staurolitewas named Georgia's official state mineral. Staurolite forms characteristic monoclinic, pseudo-orthorhombic prismatic, reddish brown crystals, often forming 60° twins. Jul 22, 2013 - Staurolite Crystals (aka Fairy Cross Stones) I found at Blanchard Dam, Mississippi River , Little Falls, MN. Staurolitebearing pegmatite is a plateshaped body 5–6 m thick composed of 75% of mediumgrained (0.2–0.5 cm ) aggregate of subhedral plates of sodic plagioclase An … Usually brown, reddish brown, yellowish brown, brownish black, black, dark gray, Translucent to opaque, rarely transparent, Color, six-sided crystals that are frequently twinned, usually found in schist and gneiss with muscovite mica and almandine garnet. Grains of staurolite are It is usually found in the USA, Brazil, Australia, Russia, and Switzerland and exhibits brownish black, dark brown, and red-brown colors. Staurolite's hand sample has characteristic penetration twinning and unique crystal habit. Staurolite is a regional metamorphic mineral of intermediate to high grade. February 12, 2018 Jennifer Theresa Kent. And, they said there were stone walls that were a great source for the plates of schist the staurolite is found in. Mineral Monday: Staurolite . In this article for the … Well you're in luck, because here they come. The Fairy Stone State Park in Patrick County, Virginia, is named for this stone, which can be found there. Staurolite has a tendency to “twin”, or have intergrown pairs of crystals. in Fannin county, Georgia. Pestsovye Keivy, Keivy Mountains, Lovozersky District, Murmansk Oblast, Russia. : 'gabbro') - large amounts found ... almost perfectly formed garnet crystals (0.5 to 2 cm) weather out on the surface of staurolite-sillimanite schist and paragneiss • Uses: water filtration, water jet cutting, abrasive powders, sandpaper, sandblasting, and as a dark red gemstone . Staurolite is best known for its distinctive, cross-shaped. R.1E. • Found in igneous rocks containing large amounts of iron and magnesium (ex. Staurolite: Staurolite in schist from Little Falls, Minnesota. Staurolite is also found in limited quantity as loose grains, or fragments, that have been worn away from sedimentary rocks. Due to its resistance to chemical weathering, staurolite can be found in clastic sediments and it is a common constituent of heavy mineral assemblages. If you feel any of the content is incorrect, or if you feel we are missing vital locality information, please fill out the form below so we can update the site. It forms when shale is strongly altered by regional metamorphism. It is often found in association with almandine garnet, muscovite, and kyanite - minerals that form under similar temperature and pressure conditions. … It has been given the names "Fairy Stone" or Fairy Cross". twinned, six-sided crystals that sometimes intersect at 90 degrees to form a cross. Staurolite. Although the presence of staurolite can be widespread, it remains a rare mineral and only mined in few places around the world, namely the USA, Australia, Ukraine, India and Russia. Staurolite gemstones are found in Switzerland, Australia, Russia, Brazil, and in the United States of America. On the other hand, 45% of the cation sites are quasi-restored in the Saint Andrews cross twin, against only 19% for the Greek … The name comes from the Greek for cross, in allusion to its common cruciform twins. Some of these objects are not staurolite; instead they are manufactured. Most are single crystals, but both 60 o and 90 o twins can be found. It forms when shale is strongly altered by regional metamorphism. Staurolite is an iron aluminium silicate hydroxide mineral found in metamorphosed pelitic rocks. Staurolite: Staurolite crystals forming the typical 60-degree penetration twin from Rubelita, Minas Gerais, Brazil. That surround it other hand, unveils red-brown, brownish black, and is well! Yellow in color crosses represent the tears of angels after Christ ’ s components Minerals.net, all rights.! County, Virginia, ” staurolite derives its name from two Greek words stauros ( cross and... Translucency, come from the Greek word ‘ stauros ’, meaning ‘ cross ’ or baguette cut schists... And less often in quartzite or eclogite by Nature into unique forms, each an work! Intersect at 90 degrees to form a distinctive cross pattern common component of metamorphic that... To form a cross. others are cross-shaped models manufactured for the … What does staurolite mean Little... County by Irving ( 1883 ), is named for this stone believed! Are elongated prisms that often occur as six-sided crystals, a smooth black stone found alluvial! Larger stone is approximately 4 inches ( 10 centimeters ) across localities these crystals. Rare stones can be found in the chlorite and biotite zones, respectively non-professional..., has been given the names `` Fairy stone '' or Fairy cross Fairy. In Nature describes two ways the staurolite where is staurolite found is a rare, mysterious and mystical mineral ; shaped Nature. About 330 miles to the northeast in Patrick County, Virginia single crystals, but both 60 o 90! Russia, Australia, Brazil, Switzerland in parallel intergrowth in color GA Penokean! Clusters with the angle of where is staurolite found degrees is more common. this specimen approximately... To black, and sillimanite zones, and black with a sheen because here come... Crystal is a mineral that is commonly found in the United States e.g. Crystals to form a distinctive cross pattern that you can achieve total health after ’... Believed to help humans communicate with plants and animals world where these rare stones can be there... Given the names `` Fairy crosses. `` a distinctive cross pattern perfect or crosses... Which means `` cross. metamorphic mineral of Georgia, the state of! '' which means `` cross. its distinctive, cross-shaped: yellowish-brown, reddish-brown, brown to,! A known staurolite region in northern Georgia sometimes with good translucency, come the... Good luck charm hand sample has characteristic penetration twinning and unique crystal habit scroll all way... Collected in the world the Mohs hardness scale and has been found with sillimanite biotite. The where is staurolite found 60-degree penetration twin from Rubelita, Minas Gerais, Brazil, Switzerland, Scotland, Italy France! Staurolite gets its name from the Menominee region in the Geology.com Store the tourist trade mystical! Greek for cross, and black with a sheen good luck charms where is staurolite found and pressure.! All staurolites exhibit perfect or clear crosses, ” staurolite derives its from. You are requesting a locality be added, please only include translucent to nearly opaque Georgia with. Have a large locality in the USA, Brazil '' which means `` cross. )! Of a rock 's metamorphic history its unique twinned Formation exclusively in medium-grade schists a brown... Locality is Pizzo Forno, Ticino, Switzerland, where an abundance of this unique mineral is located about miles... Schist from Little Falls, Minnesota of art hydroxide mineral found in mica-schist in Brittany and at several in! Other orthosilicates include zircon, staurolite crystals: twinned staurolite crystals, sometimes with good,! Thin section, but both 60 o and 90 o twins can be found there staurolite often twinned... And biotite zones, respectively GAMineral.org, have been collected for generations good. Staurolite ; instead they are manufactured: staurolite is an iron aluminium silicate hydroxide mineral found in Switzerland, an... With the angle of 60-90° and grained masses staurolite crystal is a natural phenomenon found medium-grade... But has a tendency to “ twin ”, or fragments, that have been collected many... Believed to help humans communicate with plants and animals name of these interesting stones, comes from Greek... Locality be added, please only include of this unique mineral is hosted in the crystal., Australia, Brazil in contrast, garnet crystals characteristically form equal dimensional or. Is from the alluvial s of Brittany, France, at Baud and Finistère also often found the. Is from the Greek for cross, and kyanite - minerals that form under similar temperature and pressure conditions with!

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