Parnauita & Conicalcita - a photo on Flickriver

            Parnauita
Categoría.Fosfatos - Arseniatos
Clase.8.DC.12 (Strunz)
Fórmula química.Cu4(AsO4)2(OH)2 ·2.5H2O
Propiedades físicas:
Color.Blanco, verde pálido, amarillo-verde
Raya-Verde pálida
Brillo.Sedoso, perlado
Sistema cristalino.Monoclínico
Hábito cristalino.Costras de cristales euhédricos o fibroso, en agregados esferulíticos radiados
Fractura.Irregular
Dureza.2,5 - 3 (Mohs)
Densidad.3,67 - 3,8
Pleocroísmo.Débil, amarillo verde.

Conicalcita
Categoría. Fosfatos- Arseniatos
Clase.8.BH.35 (Strunz)
Fórmula química:CaCuAsO4(OH)
Propiedades físicas.
Color.Verde, amarillo, verde-amarillo; verde-brillante bajo luz transmitida.
Raya.Verde-brillante
Brillo.Vítreo, graso
Transparencia.Tanslúcido
Sistema cristalino.Ortorrómbico, disfenoidal
Hábito cristalino.Cristales prismáticos cortos, típicamente en agragados fibrosos radiales, a veces masivo
Fractura.Irregular
Dureza.4,5 (Mohs)
Tenacidad.Quebradizo
Densidad.4,29
Pleocroísmo.Visible
Solubilidad. en HCl y nítrico

   

Taken on: August 30, 2018

Tags:

Minerales

Micromounts

ARSENIATOS « less

Sets appears in: • FOSFATOS, ARSENIATOS, VANADATOS

Groups appears in: • Macro • Closer and Closer Macro Photography - more » • Focus stacks • Macro Focus Stacking « less

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