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Coquandite

A valid IMA mineral species

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Photos of Coquandite (29)Discuss Coquandite

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Coquandite

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite, etc.

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite, etc.

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite

Lucky Knock Mine, Okanogan County, Washington, USA

Coquandite

Lucky Knock Mine, Okanogan County, Washington, USA

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About CoquanditeHide

Henri Coquand

Formula:

Sb_6+xO_8+x(SO₄)(OH)_x(H₂O)_{1- x} (x = 0.3)

Originally assumed to be (SbO)₆(SO₄)O₂.H₂O.

Colour:

Colorless

Lustre:

Adamantine

Hardness:

3 - 4

Specific Gravity:

5.78 (Calculated)

Crystal System:

Triclinic

Name:

In honour of the French scientist Henri Coquand (1811/13-1881), Professor of geology and mineralogy, who carried out extensive studies of the antimony deposits of Tuscany between 1842 and 1849.

Co-Type Localities:

ⓘ Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
ⓘ Lucky Knock Mine, Okanogan County, Washington, USA

This page provides mineralogical data about Coquandite.

Unique IdentifiersHide

Mindat ID:

1125

Long-form identifier:

mindat:1:1:1125:5

IMA Classification of CoquanditeHide

IMA status:

Approved

IMA Formula:

Sb³⁺_6+xO_8+x(S⁶⁺O₄)(OH)_x(H₂O)_1-x (x = 0.3)

Approval year:

1991

First published:

1992

Type description reference:

Sabelli, C., Orlandi, P., Vezzalini, G. (1992) Coquandite, Sb₆O₈(SO₄)H₂O, a new mineral from Pereta, Tuscany, Italy, and two other localities. Mineralogical Magazine, 56 (385) 599-603 doi:10.1180/minmag.1992.056.385.16

Classification of CoquanditeHide

Strunz-mindat (2026):

7.DE.35

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H₂O
E : With only medium-sized cations; unclassified

Dana 8th ed.:

30.1.18.1

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)_m(XO₄)_pZ_q, where m:p>2:1

Hey's CIM Ref.:

25.8.2

25 : Sulphates
8 : Sulphates of Sb, V, Cr and U

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference for Standard
Cqd	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CoquanditeHide

Lustre:

Adamantine

Transparency:

Transparent, Translucent

Colour:

Colorless

Streak:

White

Hardness:

3 - 4 on Mohs scale

Tenacity:

Flexible

Cleavage:

None Observed

Density:

5.78 g/cm³ (Calculated)

Optical Data of CoquanditeHide

Type:

Biaxial (+)

Dispersion:

r < v strong

Comments:

Small size and high RI made optical determinations difficult.

Chemistry of CoquanditeHide

Mindat Formula:

Sb_6+xO_8+x(SO₄)(OH)_x(H₂O)_{1- x} (x = 0.3)

Originally assumed to be (SbO)₆(SO₄)O₂.H₂O.

Elements listed:

H, O, S, Sb - search for minerals with similar chemistry

Crystallography of CoquanditeHide

Crystal System:

Triclinic

Class (H-M):

1 - Pinacoidal

Space Group:

Cell Parameters:

a = 11.4292(5) Å, b = 29.772(1) Å, c = 11.2989(5) Å
α = 91.152(3)°, β = 119.266(4)°, γ = 92.624(3)°

Ratio:

a:b:c = 0.384 : 1 : 0.38

Unit Cell V:

3,346.44 Å³ (Calculated from Unit Cell)

Morphology:

Tabular crystals, lamellar, fibers. Elongated along [001] and flattened on {010}.

Twinning:

Polysynthetic twinning with (010) as the twin plane.

Crystal StructureHide

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Unit Cell | Unit Cell Packed
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0020507	Coquandite	Bindi L, Biagioni C, Ceccantini L, Batoni M, Menchetti S (2014) Coquandite, Sb6+xO8+x(SO4)(OH)x(H2O)1-x (x=0.3), from the Cetine mine, Tuscany, Italy: crystal structure and revision of the chemical formula* Mineralogical Magazine 78 871-888		2014	Cetine mine, Tuscany, Italy	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Coquandite'
loop_
_publ_author_name
'Bindi L'
'Biagioni C'
'Ceccantini L'
'Batoni M'
'Menchetti S'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 78 
_journal_year 2014
_journal_page_first 871
_journal_page_last 888
_publ_section_title
;
 Coquandite, Sb6+xO8+x(SO4)(OH)x*(H2O)1-x (x=0.3), from the Cetine mine,
 Tuscany, Italy: crystal structure and revision of the chemical formula
;
_database_code_amcsd 0020507
_chemical_compound_source 'Cetine mine, Tuscany, Italy'
_chemical_formula_sum 'Sb31.5 S5 O66.5 H8.5'
_cell_length_a 11.4292
_cell_length_b 29.772
_cell_length_c 11.2989
_cell_angle_alpha 91.152
_cell_angle_beta 119.266
_cell_angle_gamma 92.624
_cell_volume 3346.441
_exptl_crystal_density_diffrn      5.030
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Sb1   0.79855   0.05344   0.57964   1.00000   0.02490
Sb2   0.47237   0.05297   0.27550   1.00000   0.02490
Sb3   0.43496   0.06298   0.92130   1.00000   0.02640
Sb4   0.08071   0.06620   0.24726   1.00000   0.02660
Sb5   0.77062   0.07329   0.91580   1.00000   0.02820
Sb6   0.73778   0.06416   0.20723   1.00000   0.02660
Sb7   0.08464   0.05013   0.56753   1.00000   0.02190
Sb8   0.35068   0.16394   0.03202   1.00000   0.02100
Sb9   0.31797   0.16912   0.37710   1.00000   0.02260
Sb10   0.69723   0.17244   0.71694   1.00000   0.02220
Sb11   0.72270   0.18742   0.03575   1.00000   0.02240
Sb12   0.03938   0.17742   0.07858   1.00000   0.02340
Sb13   0.98371   0.15290   0.71995   1.00000   0.02280
Sb14   0.63954   0.15770   0.32996   1.00000   0.02440
Sb15   0.03785   0.16962   0.44655   1.00000   0.02290
Sb16   0.34543   0.18622   0.71256   1.00000   0.02480
Sb17   0.27806   0.27115   0.88901   1.00000   0.02680
Sb18   0.89645   0.25541   0.51073   1.00000   0.02810
Sb19   0.63086   0.27205   0.21556   1.00000   0.02830
Sb20   0.20795   0.27929   0.51048   1.00000   0.02340
Sb21   0.95548   0.27089   0.83956   1.00000   0.02730
Sb22   0.63467   0.28567   0.89309   1.00000   0.02850
Sb23   0.22172   0.27846   0.16132   1.00000   0.02110
Sb24   0.49569   0.38869   0.64627   1.00000   0.02010
Sb25   0.14373   0.38357   0.63175   1.00000   0.02170
Sb26   0.82635   0.38804   0.96463   1.00000   0.02730
Sb27   0.81693   0.37931   0.32088   1.00000   0.02150
Sb28   0.49639   0.39326   0.31382   1.00000   0.02060
Sb29   0.14634   0.38466   0.96155   1.00000   0.02310
Sb30a   0.77910   0.38202   0.63680   0.50000   0.02850
Sb30b   0.86550   0.37848   0.66230   0.50000   0.02330
Sb31   0.49500   0.50471   0.18228   1.00000   0.02670
Sb32   0.47900   0.48284   0.48320   0.50000   0.02670
S1   0.13050   0.04252   0.93910   1.00000   0.02550
S2   0.43120   0.06938   0.57340   1.00000   0.02460
S3   0.56030   0.27283   0.51800   1.00000   0.03090
S4   0.50040   0.38608   0.99220   1.00000   0.02650
S5   0.14210   0.40027   0.29410   1.00000   0.02890
O1   0.25000   0.06910   0.95220   1.00000   0.04900
O2   0.04320   0.07260   0.95960   1.00000   0.04200
O3   0.06040   0.01950   0.80330   1.00000   0.04900
O4   0.17900   0.00920   0.04110   1.00000   0.04700
O5   0.50960   0.08320   0.71400   1.00000   0.03600
O6   0.31940   0.09850   0.50390   1.00000   0.03600
O7   0.37620   0.02380   0.56500   1.00000   0.04400
O8   0.51540   0.07400   0.50660   1.00000   0.03800
O9   0.61330   0.29130   0.65660   1.00000   0.05200
O10   0.43640   0.24430   0.48110   1.00000   0.04900
O11   0.53040   0.30920   0.42500   1.00000   0.05000
O12   0.66290   0.24600   0.51390   1.00000   0.04500
O13   0.57780   0.34670   0.05170   1.00000   0.04900
O14   0.35780   0.37520   0.91110   1.00000   0.04100
O15   0.52810   0.42050   0.09630   1.00000   0.04900
O16   0.54540   0.40440   0.89810   1.00000   0.05200
O17   0.08070   0.37240   0.16730   1.00000   0.05300
O18   0.07480   0.44190   0.27940   1.00000   0.04500
O19   0.10550   0.37700   0.38550   1.00000   0.05100
O20   0.28840   0.39990   0.37350   1.00000   0.04400
O21   0.04030   0.24030   0.46220   1.00000   0.04100
O22   0.30850   0.24960   0.07190   1.00000   0.04000
O23   0.94660   0.38520   0.88760   1.00000   0.04400
O24   0.72880   0.12830   0.23760   1.00000   0.04300
O25   0.45810   0.11650   0.23810   1.00000   0.04400
O26   0.07710   0.37200   0.76450   1.00000   0.03600
O27   0.91970   0.18560   0.55120   1.00000   0.04900
O28   0.69080   0.38780   0.76330   1.00000   0.04100
O29   0.94930   0.38670   0.51440   1.00000   0.04600
O30   0.69010   0.39130   0.38800   1.00000   0.04200
O31   0.70510   0.22560   0.87960   1.00000   0.04000
O32   0.23260   0.19100   0.48070   1.00000   0.04100
O33   0.16340   0.15770   0.64270   1.00000   0.04400
O34   0.92120   0.19510   0.14900   1.00000   0.04100
O35   0.79720   0.31230   0.33250   1.00000   0.04000
O36   0.87410   0.20480   0.77630   1.00000   0.04200
O37   0.20590   0.21050   0.22530   1.00000   0.04400
O38   0.66910   0.06610   0.38310   1.00000   0.04100
O39   0.13610   0.31920   0.60020   1.00000   0.04700
O40   0.80220   0.32130   0.96180   1.00000   0.04200
O41   0.49950   0.45940   0.31110   1.00000   0.04800
O42   0.02610   0.07490   0.38770   1.00000   0.03700
O43   0.30490   0.25060   0.68960   1.00000   0.04500
O44   0.85340   0.44560   0.66430   0.50000   0.04700
O-H44   0.85340   0.44560   0.66430   0.50000   0.04700
O45   0.64350   0.06920   0.99300   1.00000   0.04600
O46   0.08760   0.24690   0.79300   1.00000   0.04300
O47   0.68560   0.25910   0.07730   1.00000   0.04600
O48   0.90190   0.08520   0.11590   1.00000   0.04000
O49   0.14220   0.13150   0.25110   1.00000   0.04000
O50   0.53940   0.40450   0.50440   1.00000   0.04100
O51   0.34690   0.20590   0.89050   1.00000   0.04100
O52   0.94520   0.09600   0.58740   1.00000   0.04400
O53   0.43210   0.12780   0.94390   1.00000   0.04300
O54   0.75870   0.22700   0.32990   1.00000   0.04600
O55   0.52450   0.04810   0.12380   1.00000   0.03800
O56   0.79510   0.12600   0.67250   1.00000   0.03800
O57   0.75770   0.14190   0.89810   1.00000   0.04000
O58   0.52740   0.19340   0.16760   1.00000   0.04700
O59   0.03770   0.24670   0.02310   1.00000   0.04100
O60   0.90710   0.01530   0.51360   1.00000   0.05000
O61   0.14650   0.31890   0.97950   1.00000   0.04600
O62   0.48840   0.45320   0.66940   1.00000   0.04500
Wat63   0.34100   0.50630   0.41300   0.50000   0.05000
O-H64   0.32170   0.48990   0.76530   1.00000   0.04900
Wat65   0.87300   0.50520   0.49350   1.00000   0.04700
Wat66   0.83710   0.48700   0.89880   1.00000   0.05000
Wat67   0.01220   0.28820   0.24830   1.00000   0.04600
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Sb1 0.02550 0.02620 0.02380 0.00170 0.01280 0.00160
Sb2 0.02610 0.02640 0.02350 0.00150 0.01300 0.00140
Sb3 0.02730 0.02790 0.02510 0.00180 0.01380 0.00150
Sb4 0.02780 0.02800 0.02490 0.00170 0.01370 0.00160
Sb5 0.02940 0.02990 0.02640 0.00190 0.01450 0.00200
Sb6 0.02760 0.02840 0.02520 0.00170 0.01390 0.00180
Sb7 0.02280 0.02340 0.02080 0.00150 0.01160 0.00140
Sb8 0.02180 0.02230 0.01950 0.00150 0.01060 0.00100
Sb9 0.02360 0.02390 0.02070 0.00160 0.01130 0.00080
Sb10 0.02310 0.02360 0.02100 0.00160 0.01160 0.00110
Sb11 0.02360 0.02400 0.02070 0.00140 0.01170 0.00100
Sb12 0.02440 0.02450 0.02230 0.00180 0.01220 0.00080
Sb13 0.02410 0.02450 0.02140 0.00180 0.01230 0.00170
Sb14 0.02540 0.02550 0.02340 0.00180 0.01280 0.00130
Sb15 0.02440 0.02440 0.02110 0.00160 0.01210 0.00110
Sb16 0.02600 0.02620 0.02310 0.00190 0.01280 0.00110
Sb17 0.02770 0.02830 0.02470 0.00170 0.01390 0.00150
Sb18 0.02940 0.02990 0.02600 0.00200 0.01430 0.00150
Sb19 0.02970 0.02960 0.02670 0.00190 0.01480 0.00150
Sb20 0.02450 0.02480 0.02190 0.00150 0.01210 0.00080
Sb21 0.02870 0.02890 0.02570 0.00180 0.01440 0.00110
Sb22 0.03000 0.03010 0.02720 0.00200 0.01530 0.00170
Sb23 0.02220 0.02240 0.01980 0.00140 0.01130 0.00090
Sb24 0.02090 0.02110 0.01920 0.00150 0.01060 0.00130
Sb25 0.02300 0.02270 0.02070 0.00150 0.01170 0.00130
Sb26 0.02830 0.02870 0.02580 0.00180 0.01400 0.00090
Sb27 0.02240 0.02250 0.02020 0.00140 0.01100 0.00080
Sb28 0.02170 0.02180 0.01940 0.00140 0.01090 0.00120
Sb29 0.02440 0.02410 0.02170 0.00170 0.01190 0.00130
Sb30a 0.03010 0.03040 0.02570 0.00220 0.01420 0.00150
Sb30b 0.02430 0.02480 0.02200 0.00130 0.01220 0.00140
Sb31 0.02830 0.02810 0.02510 0.00190 0.01410 0.00140
Sb32 0.02870 0.02800 0.02530 0.00140 0.01460 0.00040
S1 0.02600 0.02600 0.02600 0.00150 0.01300 0.00060
S2 0.02400 0.02500 0.02500 0.00070 0.01200 -0.00040
S3 0.03300 0.03200 0.03100 0.00200 0.01700 0.00190
S4 0.02800 0.02600 0.02700 0.00180 0.01500 0.00130
S5 0.03000 0.02900 0.02800 0.00080 0.01500 0.00140
O1 0.04800 0.04600 0.05800 0.00400 0.03000 0.00700
O2 0.04700 0.04900 0.03300 0.00900 0.02200 0.01200
O3 0.04900 0.04900 0.04800 0.00300 0.02300 0.00400
O4 0.04900 0.04700 0.04700 0.00300 0.02500 0.00300
O5 0.03900 0.03600 0.03700 0.00200 0.02000 0.00700
O6 0.03700 0.03800 0.03000 0.00300 0.01500 0.00300
O7 0.04300 0.04900 0.03900 0.00200 0.02100 0.00100
O8 0.04400 0.04000 0.03800 0.00600 0.02400 0.01100
O9 0.05400 0.04400 0.06100 0.00500 0.03000 -0.00700
O10 0.04800 0.05600 0.04600 0.00200 0.02700 -0.00100
O11 0.05300 0.05300 0.04200 0.00100 0.02200 0.00000
O12 0.05200 0.04400 0.04200 0.00200 0.02500 -0.00400
O13 0.04800 0.05000 0.05200 0.00300 0.02600 0.00700
O14 0.04800 0.03700 0.04500 0.00200 0.02900 0.00000
O15 0.05600 0.04400 0.04600 0.00200 0.02600 0.00800
O16 0.05400 0.05400 0.05700 -0.00600 0.03500 0.01000
O17 0.06200 0.05600 0.04800 -0.01200 0.03200 -0.00300
O18 0.05000 0.04800 0.03400 0.00200 0.02000 0.00300
O19 0.05000 0.05800 0.05700 -0.00400 0.03500 0.00400
O20 0.04800 0.04300 0.04800 0.00100 0.03000 0.00100
O21 0.04000 0.05100 0.03200 0.00200 0.01800 -0.00200
O22 0.04300 0.05100 0.03100 -0.00200 0.02200 -0.00200
O23 0.04900 0.04500 0.04700 0.00200 0.03100 0.00300
O24 0.04500 0.04700 0.03900 0.00300 0.02100 -0.00600
O25 0.04600 0.05000 0.03800 0.00400 0.02200 0.00200
O26 0.05200 0.03900 0.02300 0.00900 0.02300 0.00400
O27 0.06600 0.04800 0.04100 -0.00200 0.03300 -0.00200
O28 0.04300 0.04300 0.03800 -0.00100 0.02100 0.00000
O29 0.04500 0.04900 0.04200 0.00300 0.01900 -0.00200
O30 0.04200 0.04300 0.04800 0.00400 0.02600 -0.00500
O31 0.04300 0.04300 0.03200 0.00200 0.01800 0.00400
O32 0.04600 0.04200 0.03900 -0.00100 0.02500 -0.00800
O33 0.05100 0.04400 0.03800 0.00600 0.02300 0.01100
O34 0.04300 0.03900 0.04700 0.00500 0.02600 0.00000
O35 0.03900 0.04400 0.03700 -0.00100 0.02000 -0.00100
O36 0.04300 0.04400 0.04500 0.00200 0.02700 0.00200
O37 0.04800 0.04400 0.04100 0.00200 0.02300 0.00000
O38 0.03400 0.04400 0.03200 0.00200 0.00600 0.00100
O39 0.04600 0.04700 0.05400 0.00700 0.02900 0.00000
O40 0.04100 0.04200 0.04000 0.00400 0.01900 0.00400
O41 0.04800 0.05400 0.04400 0.00300 0.02500 0.01100
O42 0.05300 0.04000 0.02900 -0.00200 0.02800 0.00200
O43 0.04100 0.04000 0.04500 0.00900 0.01300 0.01900
O44 0.04900 0.05000 0.04400 0.00300 0.02300 0.00300
O-H44 0.04900 0.05000 0.04400 0.00300 0.02300 0.00300
O45 0.06000 0.04900 0.03100 0.00200 0.02400 0.00300
O46 0.04500 0.05000 0.04200 0.00800 0.02800 0.00200
O47 0.06300 0.05200 0.03100 -0.00400 0.03100 0.00200
O48 0.04200 0.04500 0.03600 0.00200 0.02100 0.00500
O49 0.04000 0.03900 0.04600 0.00400 0.02400 0.00600
O50 0.05800 0.05100 0.02700 0.01500 0.02900 0.01000
O51 0.04400 0.05000 0.03100 0.00000 0.02000 0.01100
O52 0.05000 0.04600 0.04300 0.00200 0.02800 0.00600
O53 0.04500 0.04400 0.04300 0.00200 0.02500 0.00100
O54 0.04900 0.04600 0.04600 0.00200 0.02600 0.00000
O55 0.05600 0.03900 0.01600 -0.00100 0.01500 0.00400
O56 0.03500 0.04300 0.03400 0.00000 0.01600 -0.00300
O57 0.04100 0.04300 0.03800 0.00000 0.02200 0.00200
O58 0.04900 0.04700 0.04800 0.00300 0.02700 0.00100
O59 0.04600 0.04600 0.02900 0.00000 0.01600 0.00500
O60 0.04700 0.04800 0.04800 0.00400 0.01700 0.00200
O61 0.04900 0.04900 0.04300 0.00600 0.02300 0.00200
O62 0.04200 0.05300 0.04600 0.00100 0.02600 -0.00600
Wat63 0.04500 0.04500 0.06000 0.00000 0.02100 -0.00500
O-H64 0.04900 0.04500 0.04600 0.00200 0.01900 0.00600
Wat65 0.05300 0.04300 0.05100 0.00500 0.03000 0.00600
Wat66 0.05500 0.05400 0.03900 0.00800 0.02100 0.00700
Wat67 0.05200 0.04500 0.04100 0.00100 0.02300 0.00100

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.3006 Å	(100)
3.0573 Å	(76)
14.8527 Å	(64)
3.1164 Å	(51)
3.0863 Å	(45)
2.8151 Å	(40)
3.1939 Å	(28)
3.2010 Å	(27)
2.8405 Å	(26)
2.7095 Å	(25)

Comments:

Data from Bindi et al. (2014).

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
47a : [Near-surface hydration of prior minerals]
47b : [Sulfates and sulfites]
47d : [Arsenates, antimonates, selenates, bismuthinates]

Type Occurrence of CoquanditeHide

Co-Type Localities:

ⓘ Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy
ⓘ Lucky Knock Mine, Okanogan County, Washington, USA

General Appearance of Type Material:

Spheroidal knobs of silky fibres or, rarely, as tiny transparent colourless lamellar crystals on stibnite.

Place of Conservation of Type Material:

National Museum of Natural History, (Smithsonian Institution), Washington D.C., USA.
Museums of Natural History of the Universities of Florence and Pisa, Italy (catalogue numbers l761/RI and 8800, respectively).

Geological Setting of Type Material:

Oxidized stibnite deposit

Associated Minerals at Type Locality:

Gypsum	Klebelsbergite	Native Sulphur	Peretaite	Senarmontite
Stibiconite	Valentinite

Reference:

Synonyms of CoquanditeHide

IMA1991-024

Other Language Names for CoquanditeHide

Dutch:Coquandiet

German:Coquandit

Spanish:Coquandita

Common AssociatesHide

Associations Based on Photo Data:

16 photos of Coquandite associated with Stibnite	Sb₂S₃
10 photos of Coquandite associated with Native Sulphur	S₈
5 photos of Coquandite associated with Stibiconite	Sb³⁺Sb⁵⁺₂O₆(OH)
4 photos of Coquandite associated with Quartz	SiO₂
3 photos of Coquandite associated with Klebelsbergite	Sb₄O₄(SO₄)(OH)₂
1 photo of Coquandite associated with Halotrichite	Fe²⁺Al₂(SO₄)₄ · 22H₂O

Related Minerals - Strunz-mindat Grouping Hide

7.DE.	Magnesioalterite	Mg₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄ · ₁₇H₂O	Mon. 2/m : B2/b
7.DE.	Fabritzite	Zn₉(SO₄)₂(OH)₁₂Cl₂ · 6H₂O	Trig. 3 : R3
7.DE.	Cossaite	(Mg_0.5,◻)Al₆(SO₄)₆(HSO₄)F₆ · 36H₂O	Trig. 3 : R3
7.DE.	Downsite	K₂(MoO₃)₃(SO₄) · 4H₂O	Mon. 2/m : B2/m
7.DE.	Liangjunite	K₂(Mo₂O₅)(SO₄)₂ · 3H₂O	Tric. 1 : P1
7.DE.05	Mangazeite	Al₂(SO₄)(OH)₄ · 3H₂O	Tric.
7.DE.10	'UKI-1975-(SO:AlCu)'	(Cu, Al, SO₄, H₂O)
7.DE.10	Carbonatecyanotrichite	Cu₄Al₂(CO₃,SO₄)(OH)₁₂ · 2H₂O	Mon. 2/m : B2/m
7.DE.10	Cyanotrichite	Cu₄Al₂(SO₄)(OH)₁₂ · 2H₂O	Mon. 2/m : B2/m
7.DE.15	Schwertmannite	Fe³⁺₁₆(OH,SO₄)_12-13O₁₆ · 10-12H₂O	Tet.
7.DE.20	Tlalocite	Cu₁₀Zn₆(Te⁶⁺O₄)₂(Te⁴⁺O₃)(OH)₂₅Cl · 27H₂O	Orth.
7.DE.25	Utahite	MgCu₄Zn₂Te⁶⁺₃O₁₄(OH)₄ · 6H₂O	Tric. 1 : P1
7.DE.40	Osakaite	Zn₄(SO₄)(OH)₆ · 5H₂O	Tric. 1 : P1
7.DE.42	Alterite	Zn₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄ · 17H₂O	Mon. 2/m : B2/b
7.DE.45	Barrotite	Cu₉Al(HSiO₄)₂[(SO₄)(HAsO₄)_0.5](OH)₁₂ · 8H₂O	Trig. 3
7.DE.45	Wilcoxite	MgAl(SO₄)₂F · 17H₂O	Tric. 1 : P1
7.DE.47	Tiberiobardiite	{Cu₉Al[SiO₃(OH)]₂(OH)₁₂(H₂O)₆}(SO₄)_1.5 · 10H₂O	Trig. 3 : R3
7.DE.50	Bouškaite	(MoO₂)₂O(SO₃OH)₂(H₂O)₄	Tric. 1 : P1
7.DE.50	Stanleyite	(V⁴⁺O)(SO₄) · 6H₂O	Orth.
7.DE.57	'Khangalasite'	Fe(SO₄)(OH) · 2H₂O	Tric.
7.DE.60	Hydrobasaluminite	Al₄(SO₄)(OH)₁₀ · 12-36H₂O	Mon.
7.DE.62	Volaschioite	Fe₄(SO₄)O₂(OH)₆ · 2H₂O	Mon. 2/m : B2/m
7.DE.65	Zaherite	Al₁₂(SO₄)₅(OH)₂₆ · 20H₂O	Tric.
7.DE.75	Camérolaite	Cu₆Al₃(OH)₁₈(H₂O)₂[Sb(OH)₆](SO₄)	Tric. 1 : P1

Fluorescence of CoquanditeHide

In UV light:

None observed

Other InformationHide

Health Risks:

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

Internet Links for CoquanditeHide

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https://www.mindat.org/min-1125.html
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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

References for CoquanditeHide

Reference List:

Mandarino, Joseph A. (1997) New Minerals 1990-1994. The Mineralogical Record Inc., Tuscon, Arizona. 220pp.

(2005) Coquandite. Handbook of Mineralogy. Mineralogical Society of America

Frost, Ray L., Bahfenne, Silmarilly (2010) A Raman spectroscopic study of the mineral coquandite Sb6O8(SO4)·(H2O) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 75 (2) 852-854 doi:10.1016/j.saa.2009.12.012

Bindi, L., Biagioni, C., Ceccantini, L., Batoni, M., Menchetti, S. (2014) Coquandite, Sb_6+xO_8+x(SO₄)(OH)_x·(H₂O)_1–x (x = 0.3), from the Cetine mine, Tuscany, Italy: crystal structure and revision of the chemical formula. Mineralogical Magazine, 78 (4) 871-888 doi:10.1180/minmag.2014.078.4.08

Localities for CoquanditeHide

Showing 11 localities.

This 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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Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Greece
Attica East Attica Lavreotiki Plaka Plaka Mines ⓘ Plaka Mine No. 145	Rieck et al. (2018)

Italy (TL)
Tuscany Grosseto Province Scansano ⓘ Pereta Mine (TL)	Sabelli et al. (1992)
Pisa Province Pomarance ⓘ Micciano	Orlandi (1997) +1 other reference
Siena Province Chiusdino ⓘ Le Cetine di Cotorniano mine	Lapis Magazine Vol 6.1993 Page 22 +1 other reference

Japan
Ehime Prefecture Saijo City ⓘ Ichinokawa Mine	specimens seen at Kyoto show

Luxembourg
Canton Wiltz Goesdorf ⓘ Goesdorf antimony mine	Filella et al. (2009)

Portugal
Porto Gondomar Medas ⓘ Ribeiro da Serra Mine	Roper et al. (2015)

Romania
Maramureș County ⓘ Baia Sprie	Gabor Koller specimens
ⓘ Baia Sprie mine	collected: Gábor Koller
ⓘ Cavnic	Gábor Koller collection (EDS- and PXRD-analysed by Sándor Szakáll and Béla Fehér)

USA (TL)
Washington Okanogan County ⓘ Lucky Knock Mine (TL)	Sabelli et al. (1992)

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Coquandite

About CoquanditeHide

Unique IdentifiersHide

IMA Classification of CoquanditeHide

Classification of CoquanditeHide

Mineral SymbolsHide

Physical Properties of CoquanditeHide

Optical Data of CoquanditeHide

Chemistry of CoquanditeHide

Crystallography of CoquanditeHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of CoquanditeHide

Synonyms of CoquanditeHide

Other Language Names for CoquanditeHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of CoquanditeHide

Other InformationHide

Internet Links for CoquanditeHide

References for CoquanditeHide

Localities for CoquanditeHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide