General Information:
Chemical Formula:K2Fe++Fe+++Si8O20(OH)4
Composition:(Molecular Weight = 802.59 gm)Potassium 9.74 %
K Iron 13.92 %
FeSilicon 27.99 %
SiHydrogen 0.50 %
H Oxygen 47.84 %
O Empirical Formula: K2Fe2+Fe3+(Si8O20)(OH)4
Environment:In an altered crystal-vitric tuff associated with ferroaluminoceladonite.
IMA Status:Approved IMA (Dana # Added)
Locality:Hokonui Hills, Southland, New Zealand.
Name Origin:Named from its composition (Fe++) and the French 'celadon,' sea-green, in allusion to its common color.
Physical Properties: Cleavage:[001] Perfect
Color:dark bluish green.
Density:3.05
Diaphaniety:Translucent to opaque
Habits:Microscopic Crystals - Crystals visible only with microscopes., ,
Hardness:2-2.5 - Gypsum-Finger Nail
Luster:Earthy (Dull)
Streak:paler green
More details...
