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Quintinite-3T

Formula:
Mg
 
4
Al
 
2
(OH)
 
12
CO
 
3
·4H
 
2
O
Lustre:VitreousHardness:2
Name: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
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Physical Properties of Quintinite-3T

Lustre:Vitreous
Hardness (Mohs):2

Chemical Properties of Quintinite-3T

Formula:
Mg
 
4
Al
 
2
(OH)
 
12
CO
 
3
·4H
 
2
O
Essential elements:Al, C, H, Mg, O
All elements listed in formula:Al, C, H, Mg, O

Other Names for Quintinite-3T

Synonyms:
IMA1992-029

Other Information

Health Warning: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)

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    Localities for Quintinite-3T

    The 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.
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    (TL) indicates type locality. ? 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.
    Canada
     
    • Québec
      • Rouville Co.
        • 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.
    Mineral and/or Locality
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