Rus
 

Stone, minerals and semiprecious of the world stone
Phosphate: Vanadinite -->rus

   Diagnostic cart.

   Pb5 (VO4)3 Cl
   Crystal structure hexagonal
   Hardness on the Mohs scale
   Specific unit weight mass 6,5-7,1
   Cleavage non-existent
   Fracture, break padman, fragile frail brittle
   Colors yellow, gold, brown, orange-red
   Colors in powder triturate light-yellow, gold
   Glance (glitter, glare) diamond, fat

   Vanadinite, is a chloride-vanadate of lead. Glance (glitter, glare) fat to diamond, transparent to translucent. Colors: orange to red, rarer brown. A line light-yellow. Fracture, break uneven. Fragile. Cleavage non-existent. Appears in the area of oxidization of leaden deposits. Crystals (hexagonal Crystal structure) are needle, shallow, there are dense aggregates, botryoidal excretions. Source of passing receipt preparation of vanadium. Be found in the deposits of Karintii (Austria), Spain, Rodeziya, USA, Mexico.

   A vanadinite forms crystals, not different the variety of forms, mainly prismatic or barrel-shaped dolioform. Colouring orange-red, brown-red, ruby-red, yellow. Colors orange red, ruby-red, brownish-red in all directions; also reddish-brown, brown, brownish-yellow, gold, yellow, gold, pale straw-yellow, gold.

   Chemical composition (chemistry, compound) is maintenance (in %):; V2O5-17 - 19; PBO - 75 - 79; As2O5 3-13; Cl - 2.4 is 2.6; SAO to 3,5. Glance (glitter, glare) - semiresinous to semidiamond. Crystal structure - Hexagonal; hexagonal-dipyramid, bipyramid. Cleavage - on {001} perfect absolute, to on {010} clear. Aggregates are Crystals short-prismatic to long-prismatic along [0001], usually with smooth verges and sharp ribs; also needle to hair-like trichoid. Sometimes cavernous, crystals as hollow prisms; also in the rounded forms and parallel groups, as Pyromorfite-mimetesite; skeletal; as oblate tumours.


Vanadinite. Crystals to 1 sm Berezovskoe mine, Ural, Russia, CIS. A photo: © A.A. Evseev.


Vanadinite. Morocco. A photo: © A.A. Evseev.

   Diagnostic indication.

   Easily melt fuse in flame; we will dissolve in an aquafortis; if to evaporate this solution, red sediment appears (in place of white, as at other minerals of this group). Fuse melt easily. In closed kimberlite tube cracking and gives the negligible quantity of sublimate of chlorous lead. Easily dissolves in HNO3, forming yellow, gold solution; dissolves in HCl with formation of green solution and sediment of chlorous lead.

   Origin provenance genesis.

   As well as Pyromorfite or mimetite, a vanadinite is the second mineral of area of oxidization of deposits of lead; but unlike two first he is more rare.

   Deposit minefield mine and use.

   Be found on Ural, in Austria, Scotland. Large crystals are obtained in the deposit of Mibladen in Morocco. The ruby-red and brown-red hexagonal crystals of vanadinite are known from different deposits in the states Arizona and New Mexico. A vanadinite is used as ores on vanadium.


Vanadinite. Mibladen, Morocco. Crystals to 2 sm. A photo: © A.A. Evseev.


Vanadinite. Chiuaua, Mexico. Crystals to 1 sm. A photo: © A.A. Evseev.

   

   In the organism of people vanadium participates in oxidation-reduction, redox processes, breathing, blood formation, hematopoiesis, hematogenesis. Plays an important role in the processes of growth and reproduction, and also slows the synthesis of cholesterol, needed for formation of bone tissues and teeth. In the organism of people contained about 100 mcg of vanadium. 5% is absorbed vanadium, getting in an organism, perorally (as Vanadium or vanadate). Vanadium enters in the complement of muscularand bone tissues, can accumulate in a cardiac muscle, spleen, thyroid, lights, buds. Wetting is a main method of egestion for the absorbed vanadium, and bones are a main place of depositing (tables of contents).

   Compounds, containing vanadium, show a antineoplastic action. Signs of insufficiency of vanadium: insufficiency of vanadium can be one of reasons of diseases of the cardiovascular system and buds, increase of risk of development of atherosclerosis, increase of risk of development of saccharine diabetes, decline of genesial ability and increase of child's death rate. At growing of goats on a diet, impoverished vanadium, there was an increase of number of abortions (on the late terms of pregnancy) and death rate among new-born animals. A insulin-like action is shown both bioactive forms of vanadium (vanadate and Vanadium). In fact, all of effects of insulin, directed on adjusting of glycometabolism and lipids, are imitated compounds of vanadium.

   At sharp influence of toxic doses of vanadium chemical burns are marked are local inflammatory reactions of skin and mucous membranes of eyes, overhead respiratory tracts, accumulation of mucus in bronchial tubes and teethridges. There are system allergic reactions of type of asthma and eczema, and also leukopenia and anaemia. At schizophrenia maintenance of vanadium in blood rises considerably. Basic displays of surplus of vanadium: decline of maintenance in the organism of ascorbic acid, decline of maintenance of cystine in hairs, increase of frequency of diseases of the bronchopulmonary system, increase of risk of development of new neoplasms (tumours).

 

   DOPOG #6.1 
   Toxic non biological matters substances (toxin)

   Risk of poisoning at inhalation, contact with a derma or swallowing. Make a danger for a water environment or sewage system

   To use a mask for emergency abandonment of transport vehicle

   White rhombus, number of DOPOG, black skull and crossed cross-bones