Minerals
Holtstamite
holtstamite
Ca3(Al,Mn³⁺)2(SiO4)2(OH)4
Holtstamite: Mineral information, data and localities. — via www.mindat.org · Source
Overview
Holtstamite is a mineral species (mineral, nesosilicate garnet). It crystallises in the tetragonal system. Mohs hardness about 6. Nickel–Strunz class: 9.AD.25.
Identification characteristics
- Mohs hardness 6
Scientific references
- Holtstamite — Wikidata. https://www.wikidata.org/wiki/Q3786370 Link