Specimen with bright, clear Yellow crystals of Charlesite on minor matrix.A rare specimen of Ettringite Group.
Formula : Ca6(Al,Si)2[(O,OH)12/B(OH)4/(SO4)2] * 26 H2O
System: hexagonal Hardness:2½ Rarity:very rare
Strunz id:VI/D.13-40 -
SULFATES, CHROMATES, MOLYBDATES and TUNGSTATES
Name origin: For Dr. Charles Palache, (1869-1954) Harvard University mineralogist
|
Specimen weight:4 gr.
Crystal size:Up to 2,4 cm tall
Overall size: 15mm x 14 mm x 26 mm
Product Inquiry
Minservice (Sondrio - Italy) Minservice Galleries Main
|
|
Product Inquiry
|