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Magnesioanthophyllita
CaracterÃsticas generales
Fórmula: (Mg,Fe2+)7Si8O22(OH)2
Sistema de cristalización: Ortorrómbico
Color: white, yellowish green, grey white, grey, greenish, brownish green or brown
Dureza: 5,5-6
Rareza: muy raro
Propiedades fisicas
Hábito: Prismatic, Massive, Lamellar, Fibrous or Aggregates
Comentarios: "From its compostition and from the Latin anthophyllum - ""clove"" in reference to the color."
Color: white, yellowish green, grey white, grey, greenish, brownish green or brown
Dureza (Mohs): 5,5-6
Densidad: 2,85-3 g/cm3 (medida) | 3,31 g/cm3 (calculada)
CristalografÃa
Sistema cristalino:Ortorrómbico
Clase (H-M): -1m (6/m) - Dipiramidal
Grupo espacial: Pnma
Parámetros de la celda: a=18,61Å b=18,01Å c=5,24Å
Volumen de unidad de celda: V 1756,27Ã…
Z: 4
Propiedades ópticas
Valores RI: nα= 1,58 - 1,62
2V: medida: 78º
Máxima birrefringencia: δ = 0,004
Propiedades quÃmicas
Fórmula: (Mg,Fe2+)7Si8O22(OH)2
Elementos quÃmicos: Mg, Fe, Si, O, H
Composición quÃmica: H: 0,23%, Mg: 11,11%, Fe: 19,14%, Si: 25,67%, O: 43,86%,
BibliografÃa y más información
- American Mineralogist, vol. 63, p.1023-1052, (1978)
![Ezoic](https://go.ezodn.com/utilcave_com/img/ezoic.png)
Barra lateral
Clasificación
Nickel-Strunz : 09.DE.05- 9: Silicatos
- 09.D: Inosilicatos
- 09.DE: Inosilicatos con cadena doble de 2-periodo, Si4O11; ClinoanfÃboles
Dana 8th ed. : 66.1.2.1
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