Teruggite

Teruggite is a mineral with the chemical formula Ca4MgAs2B12O22(OH)12·12H2O. It is colorless. Its crystals are monoclinic prismatic. It is transparent. It is not radioactive. It has vitreous luster. Teruggite is rated 2.5 on the Mohs Scale of hardness.

Teruggite
General
CategoryNesoborates
Formula
(repeating unit)
Ca4MgAs2B12O22(OH)12·12H2O
Strunz classification6.FA.25
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupP21/a

References

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