General Information:
Chemical Formula:
Ca5(SiO4)2(CO3)
Composition:
(Molecular Weight = 444.57 gm)
Calcium 45.08 % Ca
Silicon 12.64 % Si
Carbon 2.70 % C
Oxygen 39.59 % O
Empirical Formula:
Ca5(SiO4)2(CO3)
Environment:
Contact zone between limestone and diorite.
Locality:
Velardena mining district, Mexico.
Physical Properties:
Cleavage:
[100] Distinct
Color:
gray, gray white, or lilac gray.
Density:
3
Diaphaniety:
Transparent to translucent
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., Cleaveable - Easily cleaved into fragments., Massive - Granular - Common texture observed in granite and othe r igneous rock.
Hardness:
5 - Apatite
Luminescence:
Fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
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