Zeolites: gismondine
Diagnostic Card.
Ca Al 2 Si 2 O 8 * 4 H 2 O
Crystal system monoclinic
4.5 Hardness
Specific gravity 2.2
Cleavage is perfect
fracture brittle
Colour colorless, white, gray
Color white powder
Gloss glass
Gismondine or Zhismonda, presented pseudotetragonal crystals, colorless or whitish, sometimes light gray. Soluble in HCl with the release of gelatinous SiO2.
Cleavage is clear from (101). Psevdooktaedricheskaya form crystals. crystal units.
Origin.
It is a mineral of secondary origin.
Place of Birth.
Found in leytsititah Capo di Bove near Rome, as well as to Vesuvius, in the Fassa Valley (Trentino) and Aci Castello (Catania Province), as well as the basaltic rocks in Hawaii, various Queensland granites (Australia ) and some basalts of Northern Ireland (UK).
- 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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