An extraordinarily rich specimen of pyrobelonite from Långban! This specimen
is predominantly
calcite
but it is also very rich in sharply crystallized native
lead and it
has numerous zones of pyrobelonite crystallization. The pyrobelonite is found
as prismatic crystals with the largest being about 2 mm in length and it is
doubly terminated. The
lead on
this specimen is predominantly octahedral with cubic face modifications. In
general the crystals have a skeletal habit. Not only is pyrobelonite a rare
mineral with only a few known localities in the world it is the only mineral
found at Långban that contains the element vanadium.
This small specimen is very rich in pyrobelonite crystals with the largest
being about 1 mm in length.
Sample size: 7.5 x 6 x 4.5 cm (top/2nd/3rd/4th row), 1 x 0.6 x 0.5 cm (bottom)