Gold Vermiculite (Traditional Chinese Medicine)
Golden Stone
Also known as: Crispy stone, rotten stone. The mica schist rocks are irregularly shaped or crushed. The whole body is tan, with a dazzling golden luster. Brittle and fragile. The gas is bleak. It is better to use golden color, block and no impurities. Henan, Hebei and other places.
Jin Yanshi: Microscopic identification:
(1) The main part of the schist schist consists of vermiculite and a small amount of hydromite, common hornblende and quartz. Under the polarizer: From the colorless to the light brownish yellow, the flake flakes are arranged in a certain direction. Low projection. With pleochroism, Ng=Nm is light brown-yellow; Np is colorless; Ng=Nm>Ng. Cleavage is complete. The interference color reaches grade 3 yellow. Nearly parallel extinction. We are extending the symbol. Biaxial crystals. Negative light. The hydromica thin slices are dark in color, light yellow-brown to brown-brown, and have strong polychromaticity. The highest interference color up to three red. Ordinary hornblende flakes are green and localized. The polychromatic absorption is strong, Ng is dark green, Nm is dark green or green, and Ng≥Nm>Np. High positive protrusions. Rough surface. With a set of cleavages, the crosscutting masks were split into two groups and intersected at 56° and 124° cleavage angles. The highest interference color can reach secondary red. Diagonal extinction, extinction angle (c∧Ng) is 12°-24°. We are extending the symbol. Biaxial crystals. Negative light. Quartz flakes are colorless and transparent and are distributed between vermiculite flakes or hydromica mica flakes. See white quartz for details.
(2) The main water micorite schist is composed of hydrobiotite, followed by vermiculite and a few common hornblende and quartz. Its optical characteristics are the same as those of hydromite, vermiculite, common hornblende, and quartz in schist schist.
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