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RM2557   Ludwigite

Miniera di Brosso, Léssolo/Brosso, Cálea, Torino, Piemonte, Italy

Radial aggregates of ludwigite crystals, a rare magnesium iron borate. It is accompanied by pyrite. Usually many of these specimens have been acidified, this is not the case. It belongs to the collection of Joan Astor, with a handwritten label.


Size: 7.8 x 5.3 x 2.4 cm.
Found in ±1979.

Col. J. Astor, Barcelona.


 

RM2455   Balangeroite

Poggio San Vittore mine, Balangero, Torino, Piemonte, Italy

Really fine specimen for this rare species. The balangeroite is a magnesium, iron anfd manganese silicate, only found in a few places worldwide. The serpentine Poggio San Vittore quarry, which were the best samples has been found and it is the type locality for the species, is abandoned since 1990. The mineral usually appears included in the serpentine matrix and only few fibers are aerial. In this specimen, fibers are totally aerial and with a good length.


Size: 4.2 x 4 x 3.4 cm.
Main crystal: 3.2 cm.
Found in ca. 1985.

Col. J. Astor (Barcelona).
Type Locality


 

RM1364   Balangeroite

Poggio San Vittore mine, Balangero, Torino, Piemonte, Italy

Really fine specimen, with good size, for this rare species. The balangeroite is a magnesium, iron anfd manganese silicate, only found in a few places worldwide. The serpentine Poggio San Vittore quarry, which were the best samples has been found and it is the type locality for the species, is abandoned since 1990.
The mineral usually appears included in the serpentine matrix and only few fibers are aerial. In this specimen, fibers are totally aerial and with an unusual length. A definitive piece, from the TL for selected displays.


Size: 12.4 x 6.0 x 5.5 cm.
Main crystal: 95 mm. fibr.

 

RM1365   Balangeroite

Poggio San Vittore mine, Balangero, Torino, Piemonte, Italy

Really fine specimen, with good size, for this rare species. The balangeroite is a magnesium, iron anfd manganese silicate, only found in a few places worldwide. The serpentine Poggio San Vittore quarry, which were the best samples has been found and it is the type locality for the species, is abandoned since 1990.
The mineral usually appears included in the serpentine matrix and only few fibers are aerial. In this specimen, fibers are totally aerial and with an unusual length. A definitive piece, from the TL for selected displays.


Size: 13.5 x 9.0 x 3.5 cm.
Main crystal: 90 mm fibr.

 
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