| |
Staurolite has been known by many names. Mineralogists and geologists will be familiar with staurotide and grenatite. Fairy stones, fairy crosses, and cross stones are abundant in North Carolina, Virginia, Georgia, and Tennessee.
Identification in hand sample: The "staurolite cross" and colour are indicative. Industrial / ecomonic uses: Used as an abrasive due to its high hardness.
Staurolite"A typical crossed pair of crystals in a mica-schist matrix. Talc"The softest mineral of them all. Tourmaline"The common black variety called schorl.
Comments: true green hiddenite very rare Staurolite ..{stohr'-uh-lyt} hydrous iron magnesium aluminum silicate .. Greek cross .. St.Andrew's cross Crystallography: orthorhombic Colors: gray to black brownish Luster: vitreous to resinous ...
staurolite twin Form of penetration twinning where two monoclinic crystals form interpenetrating twins at 90º, forming a cross, as depicted in the figure below.
Porphyroblastic Texture Certain metamorphic mineral species such as garnet and staurolite tend to recrystallize to form large, individual crystals, ...
Instances of minerals and crystals in this system are topaz, staurolite, barite, anhydrite, chrysoberyl, olivine, celestite and so on.
It has many associated minerals including quartz, kyanite, sillimanite, staurolite, andalusite, muscovite, lazulite and pyrophyllite. Dumortierite is also found inter- grown with rock crystal and is then called Dumortierite quartz.
If the crystals have grown into one another, they are called penetrant twins (forming a cross-shape like Staurolite, a star-shape like Muscovite, and other unusual shapes).
S: sawyer, scaife, scapolite, scheelite, scrimshaw, scrimshander, serefinite, shiller, soude, Spessartite, sphalerite, sphene, spinel, spodumene, staurolite, striae, strontium titanite, Sumitomo, Swarovski T: Tanzanite, trapiche, trigons ...
Sites include chromite in serpentine, talc, "kammererite" (chromian-rich clinochlore), uvarovite, anthophyllite, kyanite and staurolite. Hydromagnesite and nakauriite have also been found.
alluvial deposit of almandite garnet is found along Hampton Creek Canyon in White Pine County about 3 km from the mouth of the canyon. No production history is available for the deposit. The source of the garnet is quartz-garnet-mica-staurolite ...
Molybdenite, Monazite, Muscovite, Opal, Pyrolusite, Pyrite, Quartz, Samarskite-Y, Scapolite, Schorl, Spessartine, Struverite, Titanite, Torbernite, Uraninite, Xenotime, Zircon. In addition, common metamorphic minerals (hornblende, staurolite, ...
Cruciform - Having the shape of a cross (Staurolite) Crystal - A solid mineral, having a definite form bound by flat faces. Cryptocrystalline - Having crystals too small to be seen without a microscope. (Chalcedony) ...
crystals known as "blades," which are heavily striated lengthwise along the c-axis. Kyanite typically occurs in association with, or is a polymorph of several other silicate minerals such as andalusite, micas, sillimanite, quartz, staurolite, ...
Almandine occurs in metamorphic rocks like mica schists, associated with minerals such as staurolite, kyanite, andalusite, and others. Almandine has nicknames of Oriental garnet, almandine ruby, and carbuncle.
Minerals characteristic of low- grade metamorphic environments include the zeolites, chlorites, and andalusite. Minerals character istic of high grade metamorphic environments include sillimanite, kyanite, staurolite, epidote, and amphiboles.
See also: Crystal, Mineral, Minerals, Crystals, Gemstone
 
|