Tin ore

Tin ore

(Research on medicinal properties).

[source] cassiterite is an oxide mineral.

Cassiterite (Erya)

In the orthorhombic system, the crystals are usually biconical or biconical and tetragonal columnar, or plate-shaped; and there are knee shaped bicrystals, but they usually appear as dispersed fine grains or irregular grains. The color is brown or black, sometimes red, gray, white and so on. Streaks are white or light brown. The fracture surface is resin luster and opaque. There's no end to it. The fracture surface is semi shell or uneven. The hardness is 6-7. The specific gravity is 6.8-7.1. It mainly occurs in gas hydrothermal deposits.

[nature and taste] Research on medicinal properties: "poisonous. "

[function and indications] textual research on medicinal properties: "grinding, coating and swelling.". "