Sillimanite In Thin Section

The same mineral can look quite different in different rocks.

Sillimanite in thin section. This assistant is designed to give varying views of the same mineral in differing situations. Both the fibrous and traditional forms of sillimanite are common in metamorphosed sedimentary rocks. Physical properties chemical formula nacl class halide crystal system cubic habit cubic crystals often massive or granular color colorless or white if impure may be shades of hellip.

Unless it s only salty because a lot of people have handled it in which case ew. Under crossed polars sillimanite has second order interference colors. Identification of minerals in thin sections can be aided by studying as many images of a mineral as possible.

Home atlas of minerals in thin section. Sillimanite thin section photomicrographs are taken in plane polarized light and cross polarized light and can easily be recognized under the microscope. Some of these link to larger versions of the image.

Continue reading halite rarr. In thin section sillimanite is colorless in plane light although mats of fibrous sillimanite fibrolite can be brownish tan. If you lick it everybody does and it tastes salty it s halite.

Both the fibrous and traditional forms of sillimanite are common in metamorphosed sedimentary rocks.