Staurolite is a reddish brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has...

minerals are known as index minerals. Examples include sillimanite, kyanite, staurolite, andalusite, and some garnet. Other minerals, such as olivines, pyroxenes...

minerals are useful as well, especially the presence of the polymorphs of staurolite, which occurs frequently with kyanite. However, the most useful characteristic...

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....

muscovite, biotite, garnet, sodic plagioclase Staurolite zone: quartz, muscovite, biotite, garnet, staurolite, plagioclase Kyanite zone: quartz, muscovite...

cross-polarized light in which feldspar crystals exhibit sericite alteration Staurolite-garnet schist in thin section under cross-polarized light with sericite...

) Spodumene Hiddenite (var.) Kunzite (var.) Triphane (var.) Spurrite Staurolite Stibiotantalite Stichtite Stolzite Strontianite Strontium titanate Sulfur...

(individual crystals of unusual size) of distinctive minerals, such as garnet, staurolite, kyanite, sillimanite, or cordierite. Because schists are a very large...

honey bee Mammal: white-tailed deer Marine mammal: right whale Mineral: staurolite Nicknames: "Peach State" "Empire State of the South" Reptile: gopher tortoise...

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...