Italy, Trentino Alto Adige, Bolzano prov., minerals from fluorite mines


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In this page some fluorite specimens, coming from veins usually located (a) in the contact areas between Brixner granite (granito di Bressanone) e Brixner quartz phyllite (fillade quarzifera di Bressanone) (b) in the large Atesina porphyry platform

 

 

 

Fluorite
Cubic XX, max edge 1.4cm, on a bed of calcite. Some  XX are semitransparent with white phantoms inside, other are transparent and glassy. On the right and the back there are some bigger, less evident, cubic XX of light green fluorite.  The yellow calcite is posted on the green fluorite, as it is possible to see in the 2nd photo. This is a fluorite mine (34 Km north of Bolzano) that started as a silver mine in the 17th century (Ag-rich galena), then sphalerite was mined; it is famous worldwide for optical fluorite. This locality it is not to be confused with Corvara in Val Badia

11x8cm
Corvara mine, Val Sarentino, Bolzano. Italy
Specimen n.422

Another photo: a bigger view
Another photo: different view

 

Fluorite
Transparent cubic XX, edge up to 1.2cm,
amongst quartz XX
9x8.5cm
Corvara mine, Val Sarentino, Bolzano. Italy
Specimen n.991

Another photo: a bigger view
 

 

 

Fluorite
Cubic XX, edge up to 1cm, with an unusual dark blue color. Virgolo is a cliff on the mountains closed to Bolzano; in the porphyry there are mineralized veins with fluorite, known from ancient times

9x7cm
Virgolo, Isarco Valley, Bolzano. Italy
Specimen n.699

2nd photo: entire piece
3rd photo

 

Fluorite
Cubic XX with the tipical blue color from this place. XX surfaces are frozen (see the 2nd photo) and partially covered by microcrystalline quartz; additionally, these XX have a sort of phantom as it is possible to see better in the 3rd photo
 
6.7x5cm
Virgolo, Isarco Valley, Bolzano. Italy
Specimen n.1405

Another photo: bigger view
Another photo: diferent view
 

 

Fluorite
From the same place of previous piece: cubic XX, edge up to 1.8cm, partially covered by 2nd generation fluorite, with smaller XX, pale blue and white. the piece is a thin plate of fluorite, pale green on the back side

9x12cm
Virgolo, Isarco Valley, Bolzano. Italy
Specimen n.1181

Another photo: a bigger view

Fluorite
Cubic XX, yellowish and semitransparent, edge up to 1.8 cm. Upper side of XX in covered by pale pink baryte (see the 3rd photo), and there are some malformed small cubic XX of galena. From old mines (Monte Quaria, Case a Prato) in this locality, not well known, south of Bolzano and near Catinaccio and Latemar. I have seen similar pieces labelled from Prestavel mine (Fiemme Valley, Trento prov.) but I have been told that in this mine there were the dressing plants for the minerals transported from Nova Ponente

9x7cm
Nova Ponente, Bolzano. Italy
Specimen n.792

Another photo: a bigger view
Another phot: a different point of view


 

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