Costi d'Ur, Selva, Poschiavo, Bernina Region, Grisons, Switzerland i
Regional Level Types
Costi d'Ur Mountain Area
Selva Hamlet
Poschiavo Municipality
Bernina Region Region
Grisons Canton
Switzerland Country

White to yellowish talc masses, in which are embedded green to grey-green elongated actinolite crystals up to 30 cm in length, occur at Costi d'Ur in Val da Quadrada.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Actinolite

ⓘ Talc

2 valid minerals.

Detailed Mineral List:

ⓘ Actinolite

Formula: ◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

References:

Romani, E. (2000) Andar per cristalli - tesori nascosti. Minerali e rocce della Val Poschiavo nella raccolta del Museo Mineralogico Naturalistico di Bormio. Edizioni Grafica Colombo, Lecco, 151 pp.

Bedognè, F., Montrasio, A., and Sciesa, E. (2006) I minerali della media-alta Valtellina, delle Orobie valtellinesi e della Val Poschiavo. Aggiornamenti sulle altre località della provincia di Sondrio. Bettini, Sondrio, 255 pp.

ⓘ Talc

Formula: Mg₃Si₄O₁₀(OH)₂

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
ⓘ	Talc	9.EC.05	Mg₃Si₄O₁₀(OH)₂

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
H	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ Talc	Mg₃Si₄O₁₀(OH)₂
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate

AlpsAccretionary Complex

EuropeContinent

The AlpsMountain Range

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