General Information:
Chemical Formula:
Cu4Al2(SO4)(OH)12·2-4(H2O)
Composition:
(Molecular Weight = 662.34 gm)
Aluminum 8.15 % Al
Copper 38.38 % Cu
Hydrogen 2.74 % H
Sulfur 4.84 % S
Oxygen 45.90 % O
Empirical Formula:
Cu4Al2SO4(OH)12·3(H2O)
Environment:
Inadequately characterized mineral. Post mining alteration product.
Locality:
Cornwall, England.
Name Origin:
Named for Samuel P. Woodward (1821-1865), English naturalist and geologist.
Physical Properties:
Color:
greenish blue or turquoise.
Density:
2.38
Diaphaniety:
Translucent
Habits:
Botryoidal - "Grape-like" rounded forms (e.g.. malachite)., Fibrous - Crystals made up of fibers.,
Streak:
light blue
More details...