Where it forms, where it's found
- Geological setting
On a fracture surface of a 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
- Hardness
- 1Talc
- 2Gypsum
- 3Calcite
- 4Fluorite
- 5Apatite
- 6Orthoclase
- 7Quartz
- 8Topaz
- 9Corundum
- 10Diamond
- Transparency
- Transparent · Translucent
- Colour
- White
- Streak
- White
- Density
- 2.878 g/cm³
Optical
- Optical type
- Biaxial (-)
- UV response
- Does not fluorescence under long-, medium-, or short-wave radiation. This is in contrast with visually similar franconite which typically does fluoresce.
Crystallography
- Space group
- C2/c
- Cell parameters
- a = 21.151(4) Å · b = 6.496(1) Å · c = 12.714(3) Å
- Cell angles
- β = 103.958(3) °
- Ratio a:b:c
- 1 : 0.307 : 0.601
- Morphology
Globules (~0.15–0.20 mm in diameter) composed of radiating crystals with individual crystals having average dimensions of ~0.002 × 0.010 × 0.040 mm. Crystals are euhedral, bladed (flattened on [100]).
- Type-locality form
White globules (~0.15–0.20 mm in diameter) composed of radiating crystals with individual crystals having average dimensions of ~0.002 × 0.010 × 0.040 mm
Chemical composition
Synonyms
- Charleshatchettiet
- IMA2015-048
In other languages
- German
- Charleshatchettit · IMA 2015-048
Classification
Strunz
10th ed.4.FM
- 4OxidesClass
- 4.FHydroxides (without V or U)Division
- 4.FMHydroxides with H2O +- (OH); unclassifiedGroup
- 4.FMCharleshatchettiteSpecies
Literature, links & citation
Citations
- 2015Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 27. Mineralogical Magazine, 79 (5). 1223-1230 doi:10.1180/minmag.2015.079.5.16DOI: 10.1180/minmag.2015.079.5.16
- 2017(2017) Charleshatchettite. Handbook of Mineralogy. Mineralogical Society of America
- 2017Haring, Monika M.M., McDonald, Andrew M. (2017) Charleshatchettite, CaNb4O10(OH)2·8H2O, a new mineral from Mont Saint-Hilaire, Québec, Canada: Description, crystal-structure determination, and origin. American Mineralogist, 102 (11) 2333-2340 doi:10.2138/am-2017-5926 DOI: 10.2138/am-2017-5926
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Charleshatchettite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/charleshatchettite-46831},
note = {Accessed 2026-05-11}
}