Aluminosilicate Mineral Profile Mineral Name: Sillimanite Chemical shape: Al2SiO5 Silicate Structural Class: Nesosilicate Diagnostics Properties:         Colour: White, dark-brown and reverse lightning Transparency: Transparent to Translucent Lustre: Silky or Vitreous         Specific Gravity: 3.2 Streak: White Mohs cruelty: 7.5 in large crystals         Mineral Cleavage: Perfect. Good in 1 direction lengthwise Occurrence:         Type of tremble: Aluminium-rich metamorphic rocks         Temperature: Forms at temperatures great than 550oC(2) Pressure Field: Sillimanite is a polymorph with two other minerals: kyanite and Andalusite. Sillimanite forms at high mash (about 2.5 kilobars), Andalusite forms at higher temperatures further humiliate pressure (less than 2.5 kilobars) and Kyanite at high pressure (higher than 2.
5 kilobars) but degrade temperatures(3) Â Â Â Â Â Â Â Â Geographic Localities: Brazil, England and other European sites Main Uses: Sillimanite is mainly apply in the manufacture of spark plugs and other forms of ceramic insulation. It hold on be used as a gemstone although this is magisterial and is more often used as mineral specimens. Sillimanite: A compact chunk with obvious crystalline tendencies. Fibres are that about curved and have a pearly lustre. (http://mineral.galleries.com/scripts/item.exe? puff out+Minerals+Silicates+Sillimanite+SIL-1) If you demand to get a full essay, order it on our website:
OrderCustomPaper.comIf yo! u want to get a full essay, visit our page:
write my paper
No comments:
Post a Comment