Sericite is the name given to very fine, ragged grains and aggregates of white (colourless) micas, typically made of muscovite, illite, or paragonite....
2 KB (168 words) - 03:12, 24 January 2024
and chlorite-biotite phyllite intercalated with minor amounts of biotite-sericite-quartz schist. Between 7,000 and 7,600 m (23,000 and 24,900 ft), the lower...
234 KB (24,281 words) - 12:12, 3 June 2024
achieves a preferred orientation. It is primarily composed of quartz, sericite mica, and chlorite. Phyllite has fine-grained mica flakes, whereas slate...
3 KB (381 words) - 16:15, 15 February 2024
for Al in the Y site and a corresponding increase in Si in the Z site. Sericite is the name given to very fine, ragged grains and aggregates of white (colourless)...
42 KB (4,861 words) - 08:06, 13 May 2024
in weathering and hydrothermal environments; it may be a component of sericite. It is common in sediments, soils, and argillaceous sedimentary rocks as...
7 KB (605 words) - 20:13, 24 January 2024
selvages. Quartz-sericite-pyrite alteration, in which these minerals can be deposited both in veins and in a disseminated manner; sericite in particular...
16 KB (2,040 words) - 00:38, 27 February 2024
gridiron twinning. Distinguishable from sanidine by a larger 2Vx. Other characteristics Low negative relief; alters to sericite or clay (commonly) References...
8 KB (598 words) - 15:55, 2 May 2024
country rock. Plagioclase feldspar within the rock is converted to sericite (sericite is not a mineral; it is a term that is used to describe any fine-grained...
788 bytes (74 words) - 17:49, 18 July 2023
+/- sericite +/- silica. Often the host rock is entirely replaced by chlorite, which may appear as a chlorite schist in deformed examples. Sericite zone...
20 KB (2,537 words) - 22:35, 8 March 2024
modern exploration data demonstrate commercial gold presence in quartz-sericite-chlorite and quartz-alunite rocks in close vicinity to the hydrothermal...
1 KB (162 words) - 16:29, 3 June 2022