General Information:
Chemical Formula:WO3·(H2O)
Composition:(Molecular Weight = 249.86 gm)Hydrogen 0.81 %
H Tungsten 73.58 %
W Oxygen 25.61 %
O Empirical Formula: WO3·(H2O)
Environment:Secondary mineral derived from the alteration of tungsten minerals.
Locality:Trubull, Connecticut.
Name Origin:Named after its composition containig tungsen (Swedish, tung sten = "heavy stone").
Physical Properties: Cleavage:[001] Perfect, [???] Distinct
Color:yellow, yellow green, yellow green, or light yellow.
Density:5.5
Diaphaniety:Translucent to subtranslucent
Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Pulverulent - Forms a loose, poorly-coherent powdery mass.,
Hardness:2.5 - Finger Nail
Luminescence:None.
Luster:Earthy (Dull)
Streak:yellow
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