Sulfides: Meneghini
Diagnostic Card.
Pb 13 Cu Sb 7 S 24
Crystal system orthorhombic
2.5 Hardness
Specific weight 6,4-6,42
Cleavage is perfect
fracture conchoidal
Colour dark gray
Color black powder
shine metal
It distributed in the form of prismatic crystals isshtrihovannyh lead-gray color, and a dense fibrous structure mass.
Origin.
It occurs together with galena, sphalerite, and others.
Place of Birth.
The most famous location - Bottino mine near the city of Seravezza in the Tuscany region, where excellent crystals of perfect form, up to 2-3 cm, associated with galena, chalcopyrite, sphalerite, siderite, quartz, etc. In addition, set to Marble Lake in. Ontario (Canada), Helleforse (Sweden), Schwarzenberg in Saxony (Germany), Broken Hill (Australia). Apart from Bottineau, currently the best location - in California, near Santa Cruz (Kalkar quarry).
- Gatchell - "New Almadén snag" - arsenide and antimony sulfide (modern sulphosalts)
- Antimony - toxic metal (semi-metal) are widely used in industry, medicine and engineering
- Zirconium - a rare and non- metal and dangerous jewel in the oxide and salts
- Gold - yellow dangerous and toxic metal -date and accurate digital cable technology
- Sulphur - a golden-yellow toxic substance and a sign of volcanic activity
- Cadmium - a toxic uncirculated unknown wide range of people silvery metal
- Lead - a poisonous gray simulator silver metal and toxic metal snag
- Arsenic - poison classic medieval and modern poisoners and medicine in medicine
Toxic and hazardous radioactive rocks and minerals
** - Poisonous stones and minerals (obligatory check in chemical laboratory + clear indication of toxicity)
** - Radioactive rocks and minerals (obligatory check on a regular dosimeter + ban on the open sale of radioactivity in the event of more than 24 mR / hour + additional measures to protect the population)
Catalog minerals and gems in groups of the world
** - Poisonous stones and minerals
** - Radioactive rocks and minerals
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