Alpine Regions, eastern area, Trentino Alto Adige,  Bolzano prov (Alto Adige/Tirolo), Alpe di Siusi


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Alpe di Siusi is the Europe's largest high Alpine pasture, originated by igneous volcanic rocks. It is closed to the Fassa Valley, that is geologically and mineralogically quite similar (go to the devoted page)

 

 


Analcime
The most frequent occurrence of basaltic and basic igneous rocks: this single white X is 4cm wide. Large XX are usually opaque like this one
9.5x8cm
Rio Fromm, Castelrotto, Alpe di Siusi, Bolzano. Italy
Specimen n.511

 

Analcime
A classic piece: pale pink analcime XX in a cavity with green celadonite
7x8cm
Rio Fromm, Casterotto, Alpe di Siusi, Bolzano. Italy
Specimen n.1406

 

 

"apophyllite"
Elongated X, nearly tabular, 1.8x1cm. In the cavity there is some white analcime (bottom and right) and brown "chabazite" XX
7x6cm
Laifreider Holle, Alpe di Siusi. Bolzano. Italy
Specimen n.519

 

"apophyllite"
Tabular and thin X, 2xcm wide, surrounded by analcime 
6x4cm
Laifreider Holle, Alpe di Siusi. Bolzano. Italy
Specimen n.510

 

Baryte
Some baryte rosettes, up to 0.8cm wide, in a cavity of the volcanic rock filled with small calcite XX
8x8cm
Cime di Terrarossa (Dialer Bohlen), Alpe di Siusi, Bolzano. Italy
Specimen n.817

2nd photo
3rd photo: entire piece

 

Calcite
Scalenohedrons up to 4.2 cm
8x8cm
Molignon, Alpe di Siusi, Bolzano. Italy
Specimen n.1305

2nd photo

 

Datolite
Tabular XX, well defined, up to 0.5cm long, in a cavity 3x1.5cm wide, with analcime
7x5cm
Laifreider Holle, Alpe di Siusi. Bolzano. Italy
Specimen n.815

2nd photo
3rd photo
4th photo: entire piece
5th photo

 

Datolite
Twinned XX, pale green and semitransparent, in a cavity filled with analcime
7x5cm
Laifreider Holle, Alpe di Siusi. Bolzano. Italy
Specimen n.1322

2nd photo
3rd photo

 

Goethite
Tuft of acicular XX, 0.1 cm wide, posted on quartz colored by green celadonite
4x4cm
Dialer Bohlen, Alpe di Siusi. Bolzano. Italy
Specimen n.804

2nd photo




Natrolite
Cavity filled with pinkish thin prismatic XX of Natrolite, transparent at the tips. There are some small analcime XX . It is a classic sample from Alpe di Siusi
5.7x3.4cm
Piz Sella, Alpe di Siusi. Bolzano. Italy
Specimen n.1300

2nd photo

 

Natrolite
Prismatic XX of Natrolite in a vug of the basaltic rock, with analcime
9x9cm
Piz Sella, Alpe di Siusi. Bolzano. Italy
Specimen n.515

2nd photo
3rd photo


 

 

Stilbite
Spherules of radial XX of this mineral, known with the local name of  puflerite (from the local name of the place = Pufler Lock). There are also two "chabazite" XX. Maybe not very aesthetic, but interesting, in my opinion
5x5cm
Forra di Bulla, Alpe di Siusi, Bolzano. Italy
Specimen n.524

2nd photo: a bigger view

Stilbite
Another specimen of puflerite, with small pale pink pherules of minerals
5x5cm
Forra di Bulla, Alpe di Siusi, Bolzano. Italy
Specimen n.1301

2nd photo: a bigger view


 

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