Mineralienatlas - Fossilienatlas
Lermontovite (Lermontovit) |
Collectors Summary
Color | graugrün, grün |
Streak color | blassgrün |
Lustre | Matt, Seidenglanz (auf Bruchflächen) |
Crystal System | orthorhombisch, Ccca |
Morphology | Botryoidale Aggregate radialfaseriger Nadeln. ( im Gegensatz zu Vyacheslavit, welcher tafelige Kristallite und Aggregate bildet) |
Chemism
Chemical formula |
U4+(PO4)(OH)·H2O |
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Chemical composition |
Phosphor, Sauerstoff, Uran, Wasserstoff |
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Analysis wt% |
UO2 : 73.37, P2O5 : 19.28, H2O : 7.34 (Ref: berechnet) |
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Strunz 9th edition incl. updates |
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8: Phosphate, Arsenate, Vanadate |
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Lapis Classification |
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VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!) |
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Classification by Hölzel |
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8: PHOSPHATES ARSENATES VANADATES |
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Dana 8th edition |
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40: Hydrated Phosphates, etc |
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IMA status |
Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt |
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Mineral status |
anerkanntes Mineral |
Optical Properties
Crystallography
Crystals 3D
Open larger view |
Physical Properties
3.92 (berechnet) 4.5 (gemessen) |
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3.923 ( ρ calc. Mineralienatlas ) |
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Ja |
(Co-)Type locality
(Co-)Type locality |
Russland/Nordkaukasus, Föderationskreis/Stawropol, Region (Stavropolskiy Kray)/Pyatigorsk/Lermontovskoe U-Lagerstätte/Beshtau/Gremuchka-Erz-Zone |
Preface
In Uran-haltigen Adern eines Granit-Porphyr-Stocks |
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(bezogen auf das erstbeschrieben Vorkommen in Russland) : Mo-Sulfat, Halloysit, Vrbait, Lorandit, Evansit, Uraninit, Markasit |
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Name from |
zu Ehren von Mikhail Yur’evich Lermontov (1814–1841), russischer Poet |
Author (Name, Year) |
Melkov, 1955 |
Additional Information |
Gramaccioli, C.M., (1985; beschreibt Lermontovit als .... gewisse Ähnlichkeit mit Ningyoit. |
Safety Instructions
Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness. ![]() Safety classes: Ionizing radiation: Radioaktiv |
Other languages
German |
Lermontovit |
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Spanish |
Lermontovita |
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French |
Lermontovite |
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English |
Lermontovite |
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Russian |
Лермонтовит |
Alternative Name
German |
Lermontowit |
CNMNC symbol
Symbol |
Ler |
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Mineral Dealer
Locations with GPS information