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Dominant species
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Barium Feldspar
Chemical
Formula
KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8
Species
Silicates
Crystal
System
Monoclinic
Mohs
Scale
6-6.5
Specific
Gravity
2.55-2.76
Color
pink, white, gray, brown
Streak
white
Luster
Vitreous
Diaphaneity
opaque
Cleavage
two or three
Fracture
along cleavage planes
Barium Feldspar1402
Barium Feldspar1402
Barium Feldspar1401
Barium Feldspar1401
Barium Feldspar1396
Barium Feldspar1396
Barium Feldspar1390
Barium Feldspar1390
Barium Feldspar1384
Barium Feldspar1384
Barium Feldspar1379
Barium Feldspar1379
Barium Feldspar1375
Barium Feldspar1375