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Quintinite

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Quintin Wight
Formula:
Mg4Al2(OH)12[CO3] · 3H2O
System:
Hexagonal
Colour:
Yellow to colorless, ...
Lustre:
Vitreous
Hardness:
2
Name:
Named in 1997 by George Y. Chao and Robert A. Gault in honor of Quintin Wight [b. April 23, 1935 Canada], of Ottawa, Ontario, Canada, significant contributor to mineral studies at Mont Saint-Hilaire, and author of "The Complete Book of Micromounting" (1993).
Found as both 2H and 3T polytypes.

Both polytypes were originally approved as separate species (IMA 1992-028 and IMA 1992-029, respectively), but polytypes are not considered as separate species anymore since 1998.

Classification of Quintinite

Approved 1992
Explanation of status:
As of 1998, polytypes are no longer regarded by IMA as separate species, so Quintinite regains its species status.
5.DA.40

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
16b.7.16.3

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
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http://www.mindat.org/min-7265.html
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Type Occurrence of Quintinite

Physical Properties of Quintinite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Yellow to colorless, orange-brown
Hardness (Mohs):
2

Crystallography of Quintinite

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Quintinite-1MQuintinite-2HQuintinite-3T
  Mg4Al2(OH)12CO3 · 4H2O
Monoclinic  Trigonal 
2/m - Prismatic
B2/m   
C2/m   
a = 5.266Å, b = 9.114Å, c = 7.766Å
α = 90°, β = 103.17°, γ = 90°


a:b:c = 0.578 : 1 : 0.852  
V 362.9 ų  
1  

Chemical Properties of Quintinite

Formula:
Mg4Al2(OH)12[CO3] · 3H2O

Relationship of Quintinite to other Species

Other Members of Group:
CaresiteFe42+Al2(OH)12[CO3] · 3H2O
CharmariteMn42+Al2(OH)12[CO3] · 3H2O
ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2O
ComblainiteNi4Co2(OH)12[CO3] · 3H2O
ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2O
Group Members:
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2O
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2O
5.DA.05UM1986-10-CO:ClHMgMnZnMg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)2 · 6H2O ?
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2O
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2O
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2O
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2O
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2O
5.DA.30Claraite(Cu,Zn)3(CO3)(OH)4 · 4H2O
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2O
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2O
5.DA.40CaresiteFe42+Al2(OH)12[CO3] · 3H2O
5.DA.40CharmariteMn42+Al2(OH)12[CO3] · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2O
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2O
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2O
5.DA.45Pyroaurite-2HMg6Fe23+(CO3)(OH)16 · 4H2O
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2O
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2O
5.DA.50DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
5.DA.50HydrotalciteMg6Al2(OH)16[CO3] · 4H2O
5.DA.50PyroauriteMg6Fe23+(OH)16[CO3] · 4H2O
5.DA.50ReevesiteNi6Fe23+(OH)16(CO3) · 4H2O
5.DA.50StichtiteMg6Cr2(OH)16[CO3] · 4H2O
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2O
5.DA.50UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?
5.DA.55CoalingiteMg10Fe23+(OH)24[CO3] · 2H2O

Other Names for Quintinite

Name in Other Languages:
German:Quintinit
Spanish:Quintinita

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

Reference List:
CHAO, G.Y., and 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.

Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.

Internet Links for Quintinite

Localities for Quintinite

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.
Bolivia
 
  • Cochabamba Department
    • Ayopaya Province
[Quintinite-1M] A.R. Kampf
Brazil (TL)
 
  • São Paulo
    • Cajati
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.
Canada (TL)
 
  • 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.
Norway
 
  • Buskerud
    • Modum
      • Snarum
Raade, G. (2013): Hydrotalcite and quintinite from Dypingdal, snarum, Buskerud, Norway. Norsk Bergverksmuseum Skrifter. 50, 55-57
Russia
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Zheleznogorsk
[Quintinite-2H] Lapis 37(2) 2012, p. 12
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
[Quintinite-1M] Mineralogical Magazine 74, 833–840 (2010)
http://maurice.strahlen.org/kola/kovdor.htm; Britvin, S. N., Chukanov, N. V., Bekenova, G. K., Yagovkina, M. A., Antonov, A. V., Bogdanova, A. N., & Krasnova, N. I. (2008). Karchevskyite,[Mg18Al9 (OH) 54][Sr2 (CO3, PO4) 9 (H2O, H3O) 11], a new mineral species of the layered double hydroxide family. Geology of Ore Deposits, 50(7), 556-564.
Mineral and/or Locality  
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