General Information:
Chemical Formula:Ca10Mg4Al2Si11O39·4(H2O) (?)
Composition:(Molecular Weight = 1,556.94 gm)Calcium 25.74 %
CaMagnesium 6.24 %
MgAluminum 3.47 %
AlSilicon 19.84 %
SiHydrogen 0.52 %
H Oxygen 44.19 %
O Empirical Formula: Ca10Mg4Al2Si11O39·4(H2O)
Environment:Alteration product of melilite.
Locality:Iron Hill, Powderhorn-Cebolla district, Gunnison County, Colorado. USA.
Name Origin:Named for the San Juan Mountains, Colorado, USA.
Physical Properties: Color:white, pistachio green, or brown.
Density:3.01 - 3.28, Average = 3.14
Diaphaniety:Translucent
Habits:Fibrous - Crystals made up of fibers., ,
Hardness:5.5 - Knife Blade
More details...
