sericite

• “The quartzite shows granoblastic and blastopsammitic texture, with grain sizes varying from coarse sand to very fine pebble and with minor microcrystals of sericite, fuchsite, andalusite and iron oxide, besides detrital tourmaline, rutile, and zircon." link”

  Archive 2008-03-01

• “The rocky cliffs, about eighty feet in height at the highest point, were formed of vertically lying slate rocks -- a very uniform series of phyllite and sericite-schist.”

  The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914

• “In igneous rock the ore-bearing solutions may have altered the wall rock to a dense mixture of quartz, sericite, and chlorite.”

  The Economic Aspect of Geology

• “Various potassium silicates -- leucite, feldspar, sericite, and glauconite -- and the potassium sulphate, alunite, have received attention and certain of them have been utilized to a small extent, but none of them are normally able to compete on the market.”

  The Economic Aspect of Geology

• “The gold, in particles hardly visible to the eye, is in a sandy matrix and is associated with chloritoid, sericite, calcite, graphite, and other minerals.”

  The Economic Aspect of Geology

• “The wall rocks have undergone a "propylitic" alteration, with development of chlorite, epidote, and probably sericite, much as at Butte.”

  The Economic Aspect of Geology

• “Where sericite is dominant, the alteration is called sericitic alteration.”

  The Economic Aspect of Geology

• “Alunite is a potassium-aluminum sulphate, which differs from sericite in that sulphur takes the place of silicon.”

  The Economic Aspect of Geology

• “A dark red, finely laminated rock consisting chiefly of decomposed biotite and feldspar, occasional quartz grains and sericite and much iron oxide.”

  The Long Labrador Trail

• “A dark compact rock, in which calcite and sericite predominate.”

  The Long Labrador Trail

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