The open encyclopedia of minerals
GlossaryCite the database
Mineralogist.org
Minerals A–ZSearchCollectionsBrowse by PropertyIdentify a SpecimenCompare MineralsLocalities MapGlossaryContribute Search the Database →
Silicate

Mazzite-Mg

Mg₅(Si₂₆Al₁₀)O₇₂·30H₂O
Hardness4
Crystal systemHexagonal
ClassSilicate
←PrevMazzettiiteNextMazzite-Na→
Mazzite-Mg specimen

Mazzite-Mg Locality: Mont Semiol (Mont Semiouse; Mont Simiouse), Châtelneuf, Saint-Georges-en-Couzan, Loire, Rhône-Alpes, France Field of view 3 mm. (ID uncertain, possible Offretite) Specimen and photo Leon Hupperichs. — Photo: Leon Hupperichs · CC BY-SA 3.0

Mazzite-Mg

Mazzite-Mg is an IMA-recognized mineral species in the silicate class, with the chemical formula Mg₅(Si₂₆Al₁₀)O₇₂·30H₂O.

It crystallizes in the hexagonal crystal system (space group P6_3/mmc).

Key properties: Mohs hardness 4; specific gravity 2.11; White streak; optically uniaxial.

IMA symbol Maz-Mg, IMA status: approved, named in 1973.

Found in cavities in a porphyritic olivine basalt.

It is found associated with Phillipsite, offretite, chabazite, calcite, siderite.

The mineral was named to honor Professor Fiorenzo Mazzi, mineralogist, University of Pavia, Pavia, Italy, and the suffix indicates the dominance of magnesium.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more M minerals or help write this entry.