General Information:
Chemical Formula:Al4(SO4)(OH)10·5(H2O)
Composition:(Molecular Weight = 464.14 gm)Aluminum 23.25 %
AlHydrogen 4.34 %
H Sulfur 6.91 %
S Oxygen 65.50 %
O Empirical Formula: Al4(SO4)(OH)10·5(H2O)
Locality:Baia Sprie, Maramures, Romainia (formerly known as Felsobanya, in Hungary).
Name Origin:Named for the locality.
Physical Properties: Cleavage:[001] Perfect, [100] Distinct, [010] Distinct
Color:colorless, yellow, or white.
Density:2.35
Diaphaniety:Transparent to Translucent
Habits:Globular - Spherical, or nearly so, rounded forms (e.g. wavellite)., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Aggregates - Made of nume rous individual crystals or clusters.
Hardness:1.5 - Between Talc and Gypsum
Luster:Vitreous - Pearly
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