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
Terranera Mine, Porto Azzurro, 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 Terranera Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:1588072
Long-form Identifier:1:3:1588072:9
GUID (UUID V4):0
Nearest other occurrences of Actinolite
3.3km (2.1 miles) ⓘPorticciolo, Rio Marina, Rio, Livorno Province, Tuscany, Italy
4.1km (2.6 miles) ⓘSassi Neri mine, Capoliveri, Livorno Province, Tuscany, Italy
35.0km (21.7 miles) ⓘBotro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy
36.3km (22.5 miles) ⓘMontorsi Mine, Botro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy
37.0km (23.0 miles) ⓘTemperino Mine, Campiglia Marittima, Livorno Province, Tuscany, Italy
55.0km (34.2 miles) ⓘCretaio, Prata, Massa Marittima, Grosseto Province, Tuscany, Italy
64.3km (39.9 miles) ⓘMicciano, Pomarance, Pisa Province, Tuscany, Italy
67.2km (41.8 miles) ⓘCala Grande, Monte Argentario, Grosseto Province, Tuscany, Italy
67.9km (42.2 miles) ⓘCala Moresca, Monte Argentario, Grosseto Province, Tuscany, Italy
72.1km (44.8 miles) ⓘLe Spianate, Castiglioncello, Rosignano Marittimo, Livorno Province, Tuscany, Italy
References
Garofalo, Paolo S.; Maffei, Jacopo; Papeschi, Samuele; Dellisanti, Francesco; Neff, Christoph; Schwarz, Gunnar; Schmidt, Peter Keresztes; Günther, Detlef (2023) Fluid-rock interaction, skarn genesis, and hydrothermal alteration within an upper crustal fault zone (Island of Elba, Italy). Ore Geology Reviews, 154. doi:10.1016/j.oregeorev.2023.105348
 
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