dumortierite
Mineral characteristic.
Dumortierite relates to borosilicate (Al, Fe) 7BO3 (SiO4 ) 3 (O, OH) 3. It is composed of atoms of aluminum and iron. Dumortierite common among aluminum-rich rocks. It is named in honor of French paleontologist ME dumortierite who found samples of this mineral. In today's world dumortierite often used as a decorative stone. True beauty dyumorterita disclosed if this mineral is well polished. Then you can admire his calm, or, conversely, saturated bluish tone. They are caused by an admixture of titanium. There are pink and brownish dyumorterity. From the similar color of lapis lazuli and sodalite can be distinguished by a dull surface of the stone. From dyumorterita cut balls for massage, make him beads and cabochons. This stone is well polished, but never makes glass shine. In fact, it does not form crystals expressed. This is the most inexpensive ornamental stone from this group of minerals, but quite beautiful and charming.
The magical properties of stones.
Dumortierite - unpopular mineral in the arsenal of magicians, soothsayers and Spirituals. Nevertheless, a modest dumortierite may be useful as an amulet. It is known that the stone develops its owner precision, accuracy and orderliness. It is considered as the same that dumortierite increases the sense of responsibility and organizational skills. Dumortierite promotes success, gaining courage and helps to cope with fear.
Dumortierite. N`Rougas Suid farm, Kernhardt, Sev. Cape Prov., South Africa. Photo: © AA Evseev.
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).
All rare stones should always be checked on a regular dosimeter on the permissible level of radiation and a chemical laboratory in the absence of toxic and volatile components which are hazardous to humans and the environment.
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