|
SILLIMANITE #1 Go on to: #1 | #2 | #3 | #4 Sillimanite 
Return to: Alphabetical Listing |
||
|
Physical Properties
Al2SiO5
Hardness = 6-7; Cleavage: perfect, one direction, lengthwise Shape: usually fibrous masses, columnar, radiating Color: grayish, white, brown, greenish-brown Luster: vitreous (glassy), silky |
Description
Sillimanite is a high grade metamorphic mineral found in schist and gneiss of Barrovian metamorphic rocks. Pure specimens are not common; typically it is found scattered within the rock, and can only be detected with effort, and a good microscope.
|
|