General Information:
Chemical Formula:
NaCa5Zr4Si16O40(OH)11·8(H2O)
Composition:
(Molecular Weight = 2,008.82 gm)
Sodium 1.14 % Na
Calcium 9.98 % Ca
Zirconium 18.16 % Zr
Silicon 22.37 % Si
Hydrogen 1.35 % H
Oxygen 46.99 % O
Empirical Formula:
NaCa5Zr4Si16O40(OH)11·8(H2O)
Environment:
In a diabase.
IMA Status:
Approved IMA 1982
Locality:
Goose Creek Quarry, Loudoun Co., Virginia, USA.
Name Origin:
After the locality.
Physical Properties:
Color:
colorless, green, white, or light green.
Density:
2.48
Diaphaniety:
Translucent
Habits:
Spherical - Spherical, rounded aggregates., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Fibrous - Crystals made up of fibers.
Hardness:
5 - Apatite
Luminescence:
Non-fluorescent.
Streak:
white
More details...