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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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Thortveitite from
Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy


09583590017272051907656.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
08198350017272004666946.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
01371120017272004709499.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
08076780017272004689233.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
09583590017272051907656.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
08256190017362733249162.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
05875100017362733269436.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
06702820017362733258850.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
09583590017272051907656.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
08198350017272004666946.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
01371120017272004709499.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
00311110017272004727939.jpg
Thortveitite

Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Locality type:Quarry
Classification
Species:Thortveitite
Formula:Sc2Si2O7
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Euxenite-(Y)4
Aeschynite-(Y)2
Jervisite2
Opal2
Stilbite Subgroup1
Muscovite1
Fluorite1
Gadolinite-(Y)1
Allanite-(Y)1
Zinnwaldite1
Quartz1
Allanite-(Ce)1
Data
Mineral Data:Click here to view Thortveitite data
Locality Data:Click here to view Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Photo GalleryView Gallery (32 photos)
Data Identifiers
Mindat Occurrence Record ID:60229
Long-form Identifier:1:3:60229:7
GUID (UUID V4):0
Nearest other occurrences of Thortveitite
0.4km (0.2 miles) ⓘLocatelli quarry, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
1.3km (0.8 miles) ⓘScala dei Ratti Quarry (Ratti Quarry; Scala Quarry), Feriolo, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
30.5km (18.9 miles) ⓘLaghetto Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy
48.2km (29.9 miles) ⓘCima delle Piodelle REE-mineralization, Veglia Alp (Alpe Veglia), Varzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
48.6km (30.2 miles) ⓘConca di Boccareccio REE-mineralization, Veglia Alp (Alpe Veglia), Varzo, Verbano-Cusio-Ossola Province, Piedmont, Italy
48.9km (30.4 miles) ⓘRitterpass NE-combe REE-mineralization, Chummibort, Grengiols, Östlich Raron, Valais, Switzerland
78.4km (48.7 miles) ⓘVarenche Mine, Saint-Barthélemy, Nus, Aosta Valley, Italy
References
 
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