Vivianite
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Physical & Optical Properties
Mohs Hardness
| Mohs | Reference mineral | Vivianite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | ● |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | |
| 7 | Quartz | |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Where to Buy Vivianite
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About Vivianite
La vivianita es un mineral de fosfato de hierro hidratado que forma cristales prismáticos de color azul profundo a verde azulado cuando están oxidados. Los cristales frescos son incoloros pero se colorean rápidamente al exponerse al aire. Los cristales perfectamente formados son muy apreciados por los coleccionistas. Se encuentra en depósitos sedimentarios, pegmatitas y zonas de oxidación de minerales de hierro. Los mejores ejemplares proceden de Bolivia (mina Huanuni), Brasil, Camerún y Alemania.