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


05757300017272028347832.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
08925850017272002682617.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
05523650017272002732091.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
03937120017272002708169.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
04464500017372936125345.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
06053270017372936124465.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
07354050017373343873086.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
07564090017373342995504.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
05757300017272028347832.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
03750520017272002756804.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
05523650017272002732091.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
03937120017272002708169.jpg
Halotrichite, etc.

Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
Locality type:Mine
Classification
Species:Halotrichite
Formula:Fe2+Al2(SO4)4 · 22H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Metavoltine3
Native Sulphur2
Alunogen1
Sideronatrite1
Data
Mineral Data:Click here to view Halotrichite data
Locality Data:Click here to view Le Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:84186
Long-form Identifier:1:3:84186:9
GUID (UUID V4):0
Nearest other occurrences of Halotrichite
24.7km (15.3 miles) ⓘNiccioleta Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
30.9km (19.2 miles) ⓘCetine di Camporbiano Mine (Le Cetine; Cetine di Volterra; Cetine di Gambassi), Podere Giuseppe, Gambassi Terme, Metropolitan City of Florence, Tuscany, Italy
51.5km (32.0 miles) ⓘMonte Valerio, Campiglia Marittima, Livorno Province, Tuscany, Italy
60.0km (37.3 miles) ⓘBaratti slag locality, Piombino, Livorno Province, Tuscany, Italy
67.2km (41.8 miles) ⓘPereta Mine, Scansano, Grosseto Province, Tuscany, Italy
75.9km (47.2 miles) ⓘRio Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
References
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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