Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Actinolite from
Alpe d'Ur, Selva, Poschiavo, Bernina Region, Grisons, Switzerland


Locality type:Mountain Area
Classification
Species:Actinolite
Formula:◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Actinolite data
Locality Data:Click here to view Alpe d'Ur, Selva, Poschiavo, Bernina Region, Grisons, Switzerland
Data Identifiers
Mindat Occurrence Record ID:1513112
Long-form Identifier:1:3:1513112:8
GUID (UUID V4):0
Nearest other occurrences of Actinolite
0.3km (0.2 miles) ⓘCosti d'Ur, Selva, Poschiavo, Bernina Region, Grisons, Switzerland
1.0km (0.6 miles) ⓘAlp Cancian asbestos mines, Selva, Poschiavo, Bernina Region, Grisons, Switzerland
1.4km (0.8 miles) ⓘQuadrada (incl. Quadradin), Selva, Poschiavo, Bernina Region, Grisons, Switzerland
3.3km (2.1 miles) ⓘScortaseo (Scurtaseu) deposit, Selva, Poschiavo, Bernina Region, Grisons, Switzerland
5.2km (3.2 miles) ⓘVaruna Glacier, Poschiavo, Bernina Region, Grisons, Switzerland
6.8km (4.2 miles) ⓘPalü Glacier, Bernina Pass area, Poschiavo, Bernina Region, Grisons, Switzerland
7.4km (4.6 miles) ⓘForcella di Fellaria, Scerscen Valley, Lanzada, Sondrio Province, Lombardy, Italy
11.1km (6.9 miles) ⓘBianco Lake, Bernina Pass area, Poschiavo, Bernina Region, Grisons, Switzerland
12.9km (8.0 miles) ⓘPlan da li Tegi, Laguné Valley, Bernina Pass area, Poschiavo, Bernina Region, Grisons, Switzerland
13.7km (8.5 miles) ⓘPrimolo, Chiesa in Valmalenco, Sondrio Province, Lombardy, Italy
References
Staub, R. (1916) Bericht über die Excursion der Schweizerischen geologischen Gesellschaft im Ober-Engadin und Puschlav vom 11.-15. August 1916. Eclogae Geologicae Helvetiae, 14, 4, 479-515
Dietrich, V., and De Quervain, F. (1968) Die Nephrit-Talklagerstätte Scortaseo (Puschlav, Kanton Graubünden). Übersicht der weiteren Nephritfunde der Schweizer Alpen insbesondere der vorkommen im Oberhalbstein (Graubünden). Beiträge zur Geologie der Schweiz, Geotechnische Serie, Lieferung 16, 78 pp.
 
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