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2. Biotite - Wikipedia

   en.wikipedia.org/wiki/Biotite

   Biotite. Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula K (Mg,Fe)3AlSi3O10(F,OH)2. It is primarily a solid-solution series between the iron - endmember annite, and the magnesium -endmember phlogopite; more aluminous end-members include siderophyllite and eastonite. Biotite was ...

3. Shinumo Quartzite - Wikipedia

   en.wikipedia.org/wiki/Shinumo_Quartzite

   The change in topographic expression, color, and the facies change, from quartz arenite, to mudstone and fine-grained arkose – is gradational. [ 2 ] [ 9 ] Between the three-member Tonto Group (above) and the Shinumo Quartzite, and the rest of the folded and faulted Unkar Group, is a prominent angular unconformity , which is part of the Great ...

4. Quartzite - Wikipedia

   en.wikipedia.org/wiki/Quartzite

   Quartzite. Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone. [1][2] Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and ...

5. Corian - Wikipedia

   en.wikipedia.org/wiki/Corian

   Corian is the original material of this type, created by DuPont scientists in 1967. [1] Corian is manufactured in three thicknesses: 6 millimetres (0.24 in), 12 millimetres (0.47 in), and 19 millimetres (0.75 in). Most Corian is manufactured at a DuPont facility near Buffalo, New York. Cross-section cuts show consistent color and particulate ...

6. Mica - Wikipedia

   en.wikipedia.org/wiki/Mica

   Mica flakes (called abrak in Urdu and written as ابرک) are also used in Pakistan to embellish women's summer clothes, especially dupattas (long light-weight scarves, often colorful and matching the dress). [41] [42] Thin mica flakes are added to a hot starch water solution, and the dupatta is dipped in this water mixture for 3–5 minutes ...

7. Foliation (geology) - Wikipedia

   en.wikipedia.org/wiki/Foliation_(geology)

   Foliation in geology refers to repetitive layering in metamorphic rocks. [1] Each layer can be as thin as a sheet of paper, or over a meter in thickness. [1] The word comes from the Latin folium, meaning "leaf", and refers to the sheet-like planar structure. [1] It is caused by shearing forces (pressures pushing different sections of the rock ...