Spinels (oxides): Surica
Diagnostic card.
Pb 4+ Pb 22+ O 4
Tsingonia tetragonal
Hardness 2-3
Specific weight 8,9-9,2
Color bright red
Color in powder orange
Shine greasy
In nature, suricum is very rare, in the form of earthy masses of bright red color, together with other secondary minerals of lead.
As an artificial product is used as a pigment in anticorrosive coatings.
Origin.
It is a product of oxidation of galena and cerussite.
Place of Birth.
In Europe, the most famous deposits are Baden-Weiler and Hoorhausen in Germany, as well as Monteponi in Sardinia, where this mineral is sometimes accompanied by phosgenite. Outside Europe, good samples were found in Mexico (Bolaños, Simapan and others) and, mainly, Broken Hill in Australia.
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- 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 toxic 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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