Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Actinolite from
Montorsi Mine, Botro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy


Locality type:Mine
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 Montorsi Mine, Botro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:540936
Long-form Identifier:1:3:540936:5
GUID (UUID V4):0
Nearest other occurrences of Actinolite
1.3km (0.8 miles) ⓘBotro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy
2.1km (1.3 miles) ⓘTemperino Mine, Campiglia Marittima, Livorno Province, Tuscany, Italy
28.3km (17.6 miles) ⓘMicciano, Pomarance, Pisa Province, Tuscany, Italy
31.5km (19.6 miles) ⓘCretaio, Prata, Massa Marittima, Grosseto Province, Tuscany, Italy
32.9km (20.5 miles) ⓘPorticciolo, Rio Marina, Rio, Livorno Province, Tuscany, Italy
36.3km (22.5 miles) ⓘTerranera Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
39.9km (24.8 miles) ⓘSassi Neri mine, Capoliveri, Livorno Province, Tuscany, Italy
41.1km (25.5 miles) ⓘLe Spianate, Castiglioncello, Rosignano Marittimo, Livorno Province, Tuscany, Italy
49.2km (30.6 miles) ⓘPoggio Ginepraia, Rosignano Marittimo, Livorno Province, Tuscany, Italy
82.6km (51.3 miles) ⓘCala Grande, Monte Argentario, Grosseto Province, Tuscany, Italy
References
Nannoni, R., & Marinai, V. (2008). Monte Spinosa. Nuovi ritrovamenti alle miniere Maffei e Montorsi. Rivista Mineralogica Italiana, 2/2008, 98-111.
 
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