Chlorites (silicates): Sepiolite
Diagnostic card.
Mg 4 (OH) 2 Si 6 O 15 * 2 H 2 O + * 4 H 2 O
Diamond orthogonality
Hardness 2-2,5
Specific gravity 2
Cracked shell
Color white, yellow, gray
Color in powder white
Gloss matt
Forms dense masses of light gray and gray, very porous, soft and light, floating in the water. It is also known as sea foam.
Diagnostic signs.
Does not melt and can not be affected by acids; In the water becomes plastic.
Origin.
Secondary mineral, formed when the serpentine changes.
Place of Birth.
Forms a sedimentary deposit Serizan in Turkey. In small quantities is also found in Spain, Greece and some places in the US (Utah, California, Pennsylvania, New Mexico).
- Ghetchellit - "New Almaden blend" - arsenide and antimony sulfide (modern sulfosol)
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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 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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