Teruggite Explained

Teruggite
Category:	Nesoborates
Formula:	Ca4MgAs2B12O22(OH)12·12H2O
Imasymbol:	Tgg^[1]
Strunz:	6.FA.25
System:	Monoclinic
Class:	Prismatic (2/m) (same H-M symbol)
Symmetry:	P21/a

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.

References

• Webmineral data
• Mindat.org
• Handbook of Mineralogy

Notes and References

1. Warr. L.N.. 2021. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 85. 3. 291–320. 10.1180/mgm.2021.43. 2021MinM...85..291W. 235729616. free.