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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Cryptomelane from
Esperanza Mine, Kaminiza mines, Km 3, Lavreotiki, East Attica, Attica, Greece


Locality type:Mine
Classification
Species:Cryptomelane
Formula:K(Mn74+Mn3+)O16
Comments:Analytical work on the Mn-Oxides/Hydroxides by Branko Rieck has revealed that all specimens labeled cryptomelane from this locality are either pyrolusite or hollandite. The existence of cryptomelane has yet to be confirmed.
Confirmation
Validity:Unconfirmed/Questioned
Associated Minerals Based on Photo Data:
Dolomite1
Data
Mineral Data:Click here to view Cryptomelane data
Locality Data:Click here to view Esperanza Mine, Kaminiza mines, Km 3, Lavreotiki, East Attica, Attica, Greece
Data Identifiers
Mindat Occurrence Record ID:61204
Long-form Identifier:1:3:61204:5
GUID (UUID V4):0
Nearest other occurrences of Cryptomelane
0.5km (0.3 miles) ⓘKm 3 iron-manganese ore dump, Km 3 mines, Km 3, Lavreotiki, East Attica, Attica, Greece
0.6km (0.4 miles) ⓘKm 3 open pit, Km 3 mines, Km 3, Lavreotiki, East Attica, Attica, Greece
1.1km (0.7 miles) ⓘChaos sinkhole, Chaos mines, Elafos, Lavreotiki, East Attica, Attica, Greece
1.1km (0.7 miles) ⓘKamariza Dump, Kamariza mines (Kamareza mines), Agios Konstantinos (Kamariza), Lavreotiki, East Attica, Attica, Greece
1.4km (0.9 miles) ⓘChristiana Mine, Mercati mines, Agios Konstantinos (Kamariza), Lavreotiki, East Attica, Attica, Greece
1.7km (1.0 miles) ⓘSerpieri Mine, Kamariza Mines (Kamareza Mines), Agios Konstantinos (Kamariza), Lavreotiki, East Attica, Attica, Greece
1.9km (1.2 miles) ⓘHilarion Mine, Kamariza Mines (Kamareza Mines), Agios Konstantinos (Kamariza), Lavreotiki, East Attica, Attica, Greece
2.0km (1.2 miles) ⓘJean Baptiste Mine, Kamariza Mines (Kamareza Mines), Agios Konstantinos (Kamariza), Lavreotiki, East Attica, Attica, Greece
3.5km (2.2 miles) ⓘMegala Pefka Mine No. 28 ("Sigia Mine"), Megala Pefka Mines, Legrena Valley, Lavreotiki, East Attica, Attica, Greece
4.2km (2.6 miles) ⓘPaliokamariza Mine No. 18, Paliokamariza Mines (Paleokamariza Mines), Plaka, Lavreotiki, East Attica, Attica, Greece
References
Blaß, Günter; Fabritz, Karl Heinz; Mühlbauer, Werner; Prachar, Iwan (1998) Immer wieder Neues von Lavrion. Mineralien-Welt, 9 (2). 46-48
 
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