Staurolite is a reddish brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has...
6 KB (414 words) - 20:30, 19 January 2024
minerals are known as index minerals. Examples include sillimanite, kyanite, staurolite, andalusite, and some garnet. Other minerals, such as olivines, pyroxenes...
37 KB (4,414 words) - 09:37, 11 March 2024
minerals are useful as well, especially the presence of the polymorphs of staurolite, which occurs frequently with kyanite. However, the most useful characteristic...
14 KB (1,510 words) - 13:30, 4 February 2024
the mineral as are its crystal face angles. For example, crystals of staurolite show twinning at angles of almost precisely 90 degrees or 30 degrees....
52 KB (5,943 words) - 19:56, 4 July 2024
cross-polarized light in which feldspar crystals exhibit sericite alteration Staurolite-garnet schist in thin section under cross-polarized light with sericite...
2 KB (168 words) - 03:12, 24 January 2024
also one of very few known places on earth where Staurolite is found. Here, the mineral Staurolite sometimes forms cross rocks or “fairy stones”. Blanchard...
3 KB (253 words) - 21:38, 27 September 2023
muscovite, biotite, garnet, sodic plagioclase Staurolite zone: quartz, muscovite, biotite, garnet, staurolite, plagioclase Kyanite zone: quartz, muscovite...
2 KB (242 words) - 16:57, 15 December 2023
) Spodumene Hiddenite (var.) Kunzite (var.) Triphane (var.) Spurrite Staurolite Stibiotantalite Stichtite Stolzite Strontianite Strontium titanate Sulfur...
13 KB (867 words) - 01:34, 24 August 2024
honey bee Mammal: white-tailed deer Marine mammal: right whale Mineral: staurolite Nicknames: "Peach State" "Empire State of the South" Reptile: gopher tortoise...
172 KB (15,159 words) - 05:18, 10 September 2024
and up to 1 km wide. At both banded iron formations (metamorphosed to staurolite-grade itabirites) have been enriched to form haematite and haematite-goethite...
15 KB (1,500 words) - 11:32, 16 January 2024
Fairy stone may refer to: The mineral staurolite Certain calcium carbonate concretions in clay Fairy Stone State Park in Patrick County, Virginia This...
223 bytes (54 words) - 18:52, 11 March 2021
(individual crystals of unusual size) of distinctive minerals, such as garnet, staurolite, kyanite, sillimanite, or cordierite. Because schists are a very large...
17 KB (1,843 words) - 02:53, 22 July 2024
opened on June 15, 1936, and is home to the mysterious "fairy stones", or staurolite. The stone, prevalent in the region, may have the St. Andrew's or Roman...
5 KB (257 words) - 11:59, 19 September 2023
quartz, orthoclase +/- albite, +/- biotite +/- actinolite +/- garnet +/- staurolite +/- sillimanite Amphibolite facies is usually a product of Barrovian Facies...
9 KB (1,012 words) - 14:30, 9 January 2024
Sphalerite Spherocobaltite Spinel Spodumene Spurrite Stannite Stannoidite Staurolite Steacyite Stellerite Stephanite Stercorite Stibarsen Stibiconite Stibiopalladinite...
42 KB (2,782 words) - 11:49, 1 September 2024
grown into each other; examples of this twinning include cross-shaped staurolite twins and Carlsbad twinning in orthoclase. Cyclic twins are caused by...
109 KB (13,007 words) - 16:14, 20 July 2024
of staurolite gneiss and schist, from 60 meters (200 feet) to 150 meters (490 feet) thick, which contains porphyroblasts of garnet and staurolite up to...
9 KB (859 words) - 06:23, 17 July 2024
Al2SiO5 Dumortierite – Al 6.5–7BO 3(SiO 4) 3(O,OH) 3 Topaz – Al2SiO4(F,OH)2 Staurolite – Fe2Al9(SiO4)4(O,OH)2 Humite group – (Mg,Fe)7(SiO4)3(F,OH)2 Norbergite...
20 KB (1,897 words) - 18:21, 16 July 2024
right- and left-handed crystals aragonite, gypsum, quartz, plagioclase, staurolite Hexagonal Hexagonal prism (six-sided) beryl, galena, quartz, hanksite...
19 KB (466 words) - 08:12, 8 May 2024
Staurolite (1976)...
44 KB (1,812 words) - 11:41, 22 August 2024
metamorphic rocks like mica schists, associated with minerals such as staurolite, kyanite, andalusite, and others. Almandine has nicknames of Oriental...
53 KB (5,147 words) - 16:58, 8 August 2024
Sro Sulfoborite Sbo Samarskite-(Y) Smk-Y Scorodite Scd Siidraite Sii Staurolite St Sulphohalite Slhl Samarskite-(Yb) Smk-Yb Scorticoite Srt Silesiaite...
180 KB (418 words) - 05:15, 30 June 2024
---------------------- Gneiss --- Migmatite Chlorite zone Biotite zone Garnet zone Staurolite zone Kyanite zone Sillimanite zone A more complete indication of this...
51 KB (5,769 words) - 18:41, 25 July 2024
anthophyllite, cummingtonite, sapphirine, sillimanite, kyanite, quartz, staurolite and biotite. Gedrite was first described for an occurrence in Gèdre, Hautes-Pyrenees...
4 KB (266 words) - 01:01, 4 January 2024
Pleonaste 0.026 — Rhodolite 0.026 — Boracite 0.024 0.012 Cryolite 0.024 — Staurolite 0.023 0.012–0.013 Pyrope 0.022 0.013–0.016 Diaspore 0.02 — Grossular 0...
60 KB (8,461 words) - 14:55, 19 August 2024
Formation is primarily a mica schist with zones containing garnet and staurolite-sillimanite. The unit also contains interbedded amphibolites. The mica...
10 KB (953 words) - 22:00, 20 October 2023
assemblage changes from predominantly chlorite to biotite to garnet to staurolite to kyanite to sillimanite. This later turned out to be overly simplistic...
6 KB (500 words) - 07:58, 22 August 2024
from the chlorite zone to the biotite zone to the garnet zone to the staurolite zone. For a metapelitic rock containing chlorite, kaolinite, and quartz...
6 KB (683 words) - 00:33, 19 August 2023
usually included in the name, as, for example, garnet schist, or garnet-staurolite schist, and so forth. Metamorphism Metamorphic facies Best (2003), p 435...
2 KB (299 words) - 22:30, 12 April 2024