General Information:
Chemical Formula:
K2Ca(CO3)2
Composition:
(Molecular Weight = 238.29 gm)
Potassium 32.82 % K
Calcium 16.82 % Ca
Carbon 10.08 % C
Oxygen 40.29 % O
Empirical Formula:
K2Ca(CO3)2
Environment:
Dimorph with butschliite. The samples are fused wood-ash clinkers that occurs in partly burned fir and hemlock trees in many national parks and forest in the western United States.
Name Origin:
Named after John Gifford Fairchild (1882-1965), analytical chemist at the U. S. Geological Survey.
Physical Properties:
Cleavage:
[0001] Good
Color:
colorless.
Density:
2.446
Diaphaniety:
Transparent
Habits:
Platy - Sheet forms (e.g. micas)., ,
Hardness:
2.5 - Finger Nail
Luster:
Vitreous (Glassy)
Streak:
white
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