Muscovite In Thin Section

Click to see a rollover image that shows the twinning as the thin section is rotated and gives a better view of the birds eye extinction.

Muscovite in thin section. Muscovite is the most common mineral of the mica own family. It is clear with a pearly luster on cleavage faces often having a sparkly look in rocks. Muscovite in thin section thin section gigapans.

Another view of pe 19 showing textures at extinction. Muscovite is the most common of the mica group minerals it is typically found as massively crystalline material in books or in flaky grains as a constituent of many rock types. The green muscovite in the center of the image displays twinning as does the piece to its left.

To link to this object paste this link in email im or document to embed this object paste this html in website. Tourmaline has no cleavage though cross fractures are common and has negative elongation. It is an essential rock forming mineral present in igneous metamorphic and sedimentary rocks.

Tourmaline occurs as elongate to stubby prisms having hexagonal or triangular cross sections. They are typically zoned in shades of blue green or brown. This is called incomplete extinction or sometimes birds eye maple extinction.

Muscovite thin section photomicrographs are taken in plane polarized light and cross polarized light and can easily be recognized under the microscope. Muscovite plane polars muscovite crossed polars fine grained muscovite with chlorite green plane polars fine grained muscovite with chlorite crossed polars muscovite with biotite and garnet in maidens gneiss plane polars muscovite with biotite and garnet in maidens gneiss crossed polars. Muscovite sheets have a pearly to vitreous luster on their floor.

Muscovite thin section view description. Home rocks and minerals muscovite thin section reference url share. Add tags comment rate.