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Quintinite-2H

Pictures (3 Images total)

Quintinit-2H xx
Views (File:
1332860819
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Quintinit-2H xx
Jacupiranga Mine,Sao Paulo/Brasilien; Bildbreite ca.8 mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Brasilien/Südosten (Região Sudeste)/Sao Paulo/Cajati/Jacupiranga Alkali-Komplex
Mineral: Quintinite-2H
Image: 1332860819
License: Usage for Mineralienatlas project only
Quintinit-2H xx

Jacupiranga Mine,Sao Paulo/Brasilien; Bildbreite ca.8 mm
Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2012-03-27
Locality: Jacupiranga Alkali-Komplex / Cajati / Sao Paulo / Südosten (Região Sudeste) / Brasilien
Quintinit-2H
Views (File:
1678433040
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Quintinit-2H
Gelbe Quintinit-2H-Kristalle aus der Jacupiranga Mine bei Sao Paulo in Brasilien. Bildbreite etwa 14 mm.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Quin-3-1-1
Location: Brasilien/Südosten (Região Sudeste)/Sao Paulo/Cajati/Jacupiranga Alkali-Komplex
Mineral: Quintinite-2H
Image: 1678433040
License: Usage for Mineralienatlas project only
Quintinit-2H (SNr: SyS-Quin-3-1-1)

Gelbe Quintinit-2H-Kristalle aus der Jacupiranga Mine bei Sao Paulo in Brasilien. Bildbreite etwa 14 mm.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2023-03-10
Locality: Jacupiranga Alkali-Komplex / Cajati / Sao Paulo / Südosten (Região Sudeste) / Brasilien
Quintinit-2H
Views (File:
1678433098
): 33
Quintinit-2H
Gelbe Quintinit-2H-Kristalle aus der Jacupiranga Mine bei Sao Paulo in Brasilien. Bildbreite etwa 14 mm.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Quin-3-1-2
Location: Brasilien/Südosten (Região Sudeste)/Sao Paulo/Cajati/Jacupiranga Alkali-Komplex
Mineral: Quintinite-2H
Image: 1678433098
License: Usage for Mineralienatlas project only
Quintinit-2H (SNr: SyS-Quin-3-1-2)

Gelbe Quintinit-2H-Kristalle aus der Jacupiranga Mine bei Sao Paulo in Brasilien. Bildbreite etwa 14 mm.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2023-03-10
Locality: Jacupiranga Alkali-Komplex / Cajati / Sao Paulo / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Hardness (Mohs) 2
Solubility +++ H2SO4 1:1, ++ HNO3 1:1, + HCl 1:1
Crystal System hexagonal, P6322

Chemism

Chemical formula

Mg4Al2[(OH)12|CO3]·3H2O

Chemical composition

Aluminium, Magnesium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 469.3268824 u; Number of atoms in the formula: 43

Info

Empirical formula:

Mg4Al2[(OH)12CO3]·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.87

18

41.86

1.0079470

18.1430460
Carbon

C

2.56

1

2.33

12.0107800

12.0107800
Oxygen

O

61.36

18

41.86

15.9994300

287.9897400
Magnesium

Mg

20.71

4

9.30

24.3050600

97.2202400
Aluminium

Al

11.50

2

4.65

26.9815382

53.9630764

Analysis wt%

MgO : 33.19, FeO : 0.74, MnO : 1.15, Al2O3 : 20.52, CO2 : 9.17, H2O : 33.80 (Ref: Canadian Mineralogist 97)

Strunz 9th edition incl. updates

5.DA.40

5: Carbonate (Carbonate, Nitrate)
D: Carbonate mit weitere Anionen, mit H2O
A: Mit mittelgroßen [Kationen]
40:Quintinit-Gruppe

Classification by Hölzel

5.DD.160

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
D: Carbonates (+Anions +Water)
D: Hydrotalcite Series
1: Chlormagaluminite-Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Hydrotalcite Supergroup  ⇒ Quintinite Group

Optical Properties

max. Birefringence

0.000

RI value α / ω / n

1.533

RI value γ / ε

1.533

Ri mean

1.533

2V angle

Uniaxial (+)

Crystallography

Crystal System

hexagonal

Class (H-M)

622

Space Group number

182

Space Group

P6322

Cell parameters a (Å)

10.571

Cell parameters b (Å)

-

Cell parameters c (Å)

15.139

Cell parameters a/b or c/a

1.432

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

4

Volume (ų)

1465.075

X-Ray Powder Diffraction

7.63(100),
3.785(100),
2.603(10),
2.496(10),
2.341(10),
2.166(10),
1.991(10),
1.825(20)
XRD chart Quintinite-2H

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hardness (Mohs)

2

Density (g/cm³)

2.14 (gemessen)

2.128 ( ρ calc. Mineralienatlas )

Instability

+++ H2SO4 1:1, ++ HNO3 1:1, + HCl 1:1

(Co-)Type locality

(Co-)Type locality

Brasilien/Südosten (Região Sudeste)/Sao Paulo/Cajati/Jacupiranga Alkali-Komplex

Preface

Author (Name, Year)

Chao & Gault, 1997

References

Canadian Mineralogist 35 (1997), 1541

IMA group assignments

 
Hydrotalcite Supergroup
 
 
 

 
 
Quintinite Group
 
 
 

 
 
 
Caresite-3T
Fe42+Al2[(OH)12|CO3]·3H2O
trigonal
P3112, P3222

 
 
 
Charmarite
Mn42+Al2[(OH)12|CO3]·3H2O
hexagonal
P6322

 
 
 
Charmarite-3T
Mn42+Al2[(OH)12|CO3]·3H2O
trigonal
P3112, P3222

 
 
 
Chlormagaluminite
(Mg,Fe2+)4Al2(OH)12(Cl2,CO3)·2H2O
hexagonal
P6c2

 
 
 
Comblainite
Ni4Co3+2(CO3)(OH)12·3H2O
hexagonal
 

 
 
 
Quintinite-2H
Mg4Al2[(OH)12|CO3]·3H2O
hexagonal
P6322

 
 
 
Quintinite-3T
Mg4Al2[(OH)12|CO3]·3H2O
trigonal
P3112, P3222

 
 
 
Zaccagnaite
Zn4Al2(OH)12(CO3)·3H2O
hexagonal
P63/mmc

 
 
 
Zaccagnaite-3R
(Zn0.6Al0.4)(OH)2(CO3)0.2·0.5H2O
trigonal
 

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Actuality: 11. May 2025 - 20:47:46

Other languages

German

Quintinit-2H

Spanish

Quintinita-2H

English

Quintinite-2H

CNMNC (IMA)-Number

IMA 1992-028

IDs

GUSID (Global unique identifier short form) PGgZhj7b9kaaL8yCSFbvTg
GUID (Global unique identifier) 8619683C-DB3E-46F6-9A2F-CC824856EF4E
Database ID 3190