Mineralogy Database

Nickel-Strunz Silicates Classification

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Minerals Arranged by Nickel-Strunz (Version 10) Classification

The Nickel-Strunz 10th Edition (Pending Publication) Mineralogical Tables by Hugo Strunz and Ernest H. Nickel is based on a digital copy obtained from Jim Ferraiolo. Jim is responsible for the Strunz Classification in Mindat.org and he has generously provided webmineral with an updated copy of the classification numbers. Follow this link for a short discussion on the Nickel-Strunz Classification Number.

Note: Space Group in Red   Point Group in Green.
* - Not IMA Approved.

! - Dana Number Added or Changed.

? - IMA Discredited Mineral Name.

Nickel-Strunz Silicates Classification


09.BB Si2O7 groups, without non-tetrahedral anions;

09.BB.10 Gugiaite Ca2BeSi2O7 P 421m 4 2m
09.BB.10 Jeffreyite (Ca,Na)2(Be,Al)Si2(O,OH)7 C 2221 2 2 2
09.BB.10 Hardystonite Ca2ZnSi2O7 P 421m 4 2m
09.BB.10 Akermanite Ca2MgSi2O7 P 421m 4 2m
09.BB.10 Gehlenite Ca2Al(AlSi)O7 P 421m 4 2m
09.BB.10 Melilite (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7 P 421m 4 2m
09.BB.10 Okayamalite! Ca2B2SiO7 P 421m 4 2m
09.BB.10 Cebollite Ca5Al2(SiO4)3(OH)4 Unk Ortho
09.BB.15 Barylite BaBe2Si2O7 Pn21a mm2
09.BB.15 Clinobarylite! BaBe2Si2O7 Pmn2 2/m 2/m 2/m
09.BB.20 Andremeyerite BaFe(Fe++,Mn,Mg)Si2O7 P 21/c 2/m