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This is why it is so difficult to obtain any good Silvers from Porco
Specimen # BOL711B84
Specimen # BOL711B69
and this is a great example of said material
It’s not common to find two different twinning habits of Cassiterite on the same specimen from Viloco
Ferberite fluorescent This is why it isA predominant, sharp, lustrous, fairly thick blade of Ferberite is surrounded by several smaller blades and one little closed twin of equal quality. The main crystal is contacted on the side, hence the reduced price, but its still a good reference specimen from this famous Ferberite producing locality. Specimen # BOL711B75
US$ 14.50
US$ 22.00
US$ 14.50
US$ 26.00
US$ 45.70
