Where it forms, where it's found
- Geological setting
Late-stage hydrothermal minerals in miarolitic cavities and in pegmatitic bodies within nepheline syenite.
- Type locality
- Poudrette quarry (De-Mix quarry
- Demix quarry
- Uni-Mix quarry
- Carrière Mont Saint-Hilaire
- MSH)
- Mont Saint-Hilaire
- La Vallée-du-Richelieu RCM
- Montérégie
- Québec
- Canada
45.5628°, -73.1417°
1recorded occurrences
Physical
Optical
- Optical type
- Uniaxial (-)
- UV response
- Not fluorescent.
Crystallography
- Cell parameters
- a = 10.98(5) Å · c = 15.1(2) Å
- Z
- 4
- Type-locality form
Charmarite-2H: Tabular hexagonal crystals, commonly stacked along [0001] to form pagoda like aggregates. Also as thin mica-like plates, sometimes forming star-shaped aggregates. Charmarite-3T: Thin (0001) plates forming caps at the free end of prismatic crystals or as stacked tabular crystals that taper off at the other end to give an overall appearance of a nail.
- Comment
Space group P6322
Crystal structure
Chemical composition
Synonyms
- Charmariet
- Unnamed (MSH UK-58)
In other languages
- German
- Charmarit · IMA 1992-026
- Italian
- Charmarite · Charmarite-2H · Charmarite-3T
- Chinese
- 水碳铝锰石
Classification
Strunz
10th ed.5.DA.40
- 5CarbonatesClass
- 5.DCarbonates with additional anions, with H2ODivision
- 5.DAWith medium-sized cationsGroup
- 5.DA.40CharmariteSpecies
Dana
8th ed.16b.07.16.01
- 16bHydrated Carbonates Containing Hydroxyl or HalogenClass
- 16b.07MiscellaneousType
- 16b.07.16— unnamed intermediate level —Group
- 16b.07.16.01CharmariteSpecies
Group, growth & confusion
Literature, links & citation
Citations
- 1997Chao, G. Y., Gault, R. A. (1997) Quintinite-2H, quintinite-3T, charmarite-2H, charmarite-3T and caresite-3T, a new group of carbonate minerals related to the hydrotalcite-manasseite group. The Canadian Mineralogist, 35 (6) 1541-1549
- 2005(2005) Charmarite. Handbook of Mineralogy. Mineralogical Society of America
- 2012Mills, S. J.; Christy, A. G.; Génin, J.-M. R.; Kameda, T.; Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76 (5). 1289-1336 doi:10.1180/minmag.2012.076.5.10DOI: 10.1180/minmag.2012.076.5.10
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Charmarite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/charmarite-7582},
note = {Accessed 2026-05-11}
}