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Mg4Al2(OH)12CO3 · 4H2O
Named after Quintin Wight (b. 1935), of Ottawa, Ontario, Canada, significant contributor to mineral studies at Mont Saint-Hilaire, and author of The Complete Book of Micromounting (1993).
A polytype of Quintinite

The 3T polytype was originally described from Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada.

Classification of Quintinite-3T

Explanation of status:
In 1998 The IMA pronounced all polytypes as crystallographic varieties URL:
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Physical Properties of Quintinite-3T

Hardness (Mohs):

Crystallography of Quintinite-3T

Crystal System:

Chemical Properties of Quintinite-3T

Mg4Al2(OH)12CO3 · 4H2O
All elements listed in formula:

Other Names for Quintinite-3T

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Quintinite-3T

Reference List:
Canadian Mineralogist 35, 1541-1549(1997)

Internet Links for Quintinite-3T

Localities for Quintinite-3T

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Chao, 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. Canadian Mineralogist: 35: 1541-1549; American Mineralogist: 83: 1347.
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