Sulphides: Polybasite
Diagnostic card.
(Ag, Cu) 16 Sb 2 S 11
Singonia monoclinic
Hardness 2-3
Specific weight 6-6,2
Cleavage imperfect
Color black, light red
Powder in color from black to light red
Glitter metal
It occurs in the form of tabular crystals of pseudohexagonal and pseudotrigonal appearance; Also in the form of dense clusters; Cleavage is imperfect. The color is iron-black, sometimes with shades of light ruby red. Translucent or translucent. In individual scales, the shine appears diamond.
Diagnostic signs.
It melts at very low temperature.
Origin.
Occurs in veins containing native silver and its minerals.
Deposits and applications.
Famous locations are in Saxony and Harz (Germany), Pribram in Bohemia (Czech Republic), as well as in Chile, Mexico and the USA, especially in the fields of the states of Colorado, Montana, Idaho, Arizona, Nevada. It occurs in the Cobalt field in Ontario (Canada) and in small quantities in the Sarrabus mine (Sardinia). Polibasite is used to extract silver.
- Ghetchellit - "New Almaden blend" - arsenide and antimony sulfide (modern sulfosol)
- Antimony is a toxic metal (semimetal) , widely used in metallurgy, medicine and engineering
- Zirconium - a rare and undiscovered metal and the most dangerous precious stone in oxide and salt
- Gold - yellow dangerous and poisonous metal of modern accurate digital and cable technologies
- Sulfur is a golden-yellow toxic substance and a sign of active volcanic activity
- Cadmium is an undisputed toxic silvery metal unknown to a wide range of people
- Lead - a poisonous gray imitator of metallic silver and toxic metal blende
- Arsenic is a classic poison of medieval and modern poisoners and medicine in medicine
Poisonous and radioactive dangerous stones and minerals
** - poisonous stones and minerals (mandatory check in the chemical laboratory + explicit indication of toxicity)
** - radioactive stones and minerals (mandatory check on the standard dosimeter + ban on open sales in case of radioactivity exceeding 24 milli / g / h + additional measures of population protection)
Catalog of minerals and semi-precious stones of the world by groups
** - poisonous stones and minerals
** - radioactive stones and minerals
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