Carbonates: Sodium nitrate
Diagnostic Card.
Na NO 3
Crystal system trigonal
Hardness of 1.5-2
Specific gravity 2.2
Cleavage is perfect
Color from colorless to white
Gloss glass
Also known as nitronatrit, nitratin. It crystallizes in the trigonal system. Sometimes there is a single rhombohedral crystals are often twinned, easily separable by cleavage. But for the most part it is represented by dense granular clusters, sometimes crusts, efflorescence. The transparent, glass gloss, colorless or white, but because of impurities may become reddish, gray, yellow.
Diagnostic features.
Very soft, soluble in water.
Origin.
Formed in the arid climatic zone as a result of evaporation.
Deposits and application.
Huge deposits are located in the coastal area of Northern Chile. Their local name - "kalicheras" (from the "caliche" - the names of extracted mineral raw materials). Rarely comes to the surface, for the most part of his exhibit at a depth of 0.5 to 3 meters, floors sand soaked sulfates and clays and conglomerates with other minerals (nitrokalit, gypsum, halite, anhydrite). Smaller deposits discovered in Peru, Bolivia, South Africa, Russia, India and California. Sodium nitrate is used in agriculture as a fertilizer and in the chemical industry and metallurgy.
- 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
Comments
Commenting, keep in mind that the content and the tone of your messages can hurt the feelings of real people, show respect and tolerance to his interlocutors, even if you do not share their opinion, your behavior in terms of freedom of speech and anonymity offered by the Internet, is changing not only virtual, but real world. All comments are hidden from the index, spam control.