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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Römerite from
Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy


09459410017272030791122.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
07751870017272003861395.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
09995350017364234285151.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
03625360017271926245861.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
01994150017364234292706.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
09995350017364234285151.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
03625360017271926245861.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
07751870017272003861395.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
09995350017364234285151.jpg
Römerite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
Locality type:Mine
Classification
Species:Römerite
Formula:Fe2+Fe23+(SO4)4 · 14H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Rozenite2
Metavoltine1
Data
Mineral Data:Click here to view Römerite data
Locality Data:Click here to view Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:84208
Long-form Identifier:1:3:84208:0
GUID (UUID V4):0
Nearest other occurrences of Römerite
17.7km (11.0 miles) ⓘCampiano Mine, Montieri, Grosseto Province, Tuscany, Italy
40.6km (25.2 miles) ⓘGavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
67.2km (41.8 miles) ⓘPereta Mine, Scansano, Grosseto Province, Tuscany, Italy
References
Borselli G., Innocenti E., Rossellini A., 1978. Ancora un raro minerale alle Cetine - la Romerite. Not. Gr. Mineral. Fiorent., V, 4: 15-16
Sabelli, Cesare, Brizzi, Giancarlo (1984) Alteration Minerals of the Cetine Mine, Tuscany, Italy. The Mineralogical Record, 15 (1) 27-36
Menchetti, S., Batoni, M., Batacchi, C., Borselli, G., Brogi, A., Ceccantini, L., Fassina, B., Marchesini, M., Rossellini, A. & Ruggieri, G. (2015): Le Cetine di Cotorniano. Miniera e minerali. Associazione Micro-Mineralogica Italiana, Cremona, 354 p.
 
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