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Bounahasite

A valid IMA mineral species
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02498110017498312675877.jpg
Bounahasite

Bou Nahas Mine, Oumjrane mining area, Alnif Cercle, Tinghir Province, Drâa-Tafilalet Region, Morocco
02498110017498312675877.jpg
Bounahasite

Bou Nahas Mine, Oumjrane mining area, Alnif Cercle, Tinghir Province, Drâa-Tafilalet Region, Morocco
03126750017511068302653.jpg
Bounahasite

Bou Nahas Mine, Oumjrane mining area, Alnif Cercle, Tinghir Province, Drâa-Tafilalet Region, Morocco
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About BounahasiteHide

03000160017272473425433.jpg
Bou Nahas mine

Bou Nahas Mine, Oumjrane mining area, Alnif Cercle, Tinghir Province, Drâa-Tafilalet Region, Morocco
Formula:
Cu+Cu2+2(OH)3Cl2
Colour:
Green
Lustre:
Vitreous
Specific Gravity:
3.90 (Calculated)
Crystal System:
Monoclinic
Name:
Named after the Bou Nahas Mine, Morocco, the type locality.
New structure type.

First mixed-valency purely Cu chloride mineral (however, compare, e.g., allochalcoselite). Also compare nantokite - another natural Cu(I) chloride.

Chemically somewhat resembles minerals of the atacamite group.


Unique IdentifiersHide

Mindat ID:
56029
Long-form identifier:
mindat:1:1:56029:8

IMA Classification of BounahasiteHide

Classification of BounahasiteHide

Strunz-mindat (2026):
3.DA.

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb

Mineral SymbolsHide

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

SymbolSourceReference for Standard
BnhsIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of BounahasiteHide

Lustre:
Vitreous
Colour:
Green
Cleavage:
Perfect
Parallel to {110}
Density:
3.90 g/cm3 (Calculated)

Chemistry of BounahasiteHide

Mindat Formula:
Cu+Cu2+2(OH)3Cl2
Element Weights:
Element% weight
Cu60.991 %
Cl22.685 %
O15.356 %
H0.967 %

Calculated from ideal end-member formula.
Elements listed:
Cl, Cu, H, O - search for minerals with similar chemistry

Crystallography of BounahasiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 8.5925(1) Å, b = 6.4189(1) Å, c = 10.4118(2) Å
β = 111.804(2)°
Ratio:
a:b:c = 1.339 : 1 : 1.622
Unit Cell V:
533.17 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space group is P21/n.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.71 Å(70)
5.34 Å(22)
3.856 Å(100)
2.673 Å(36)
2.665 Å(30)
2.350 Å(71)
2.130 Å(17)
2.062 Å(17)
Locality:
Bou Nahas Mine, Oumjrane mining area, Alnif Cercle, Tinghir Province, Drâa-Tafilalet Region, Morocco
Reference:
Lykova, Inna, Rowe, Ralph, Poirier, Glenn, Friis, Henrik, Helwig, Kate (2023) Bounahasite, Cu+Cu2+2(OH)3Cl2, a new mineral from the Bou Nahas Mine, Morocco. Mineralogical Magazine, 87 (2) 218-224 doi:10.1180/mgm.2022.133
Comments:
Bou Nahas Mine, Morocco. Data from the type description.

Type Occurrence of BounahasiteHide

Type Locality:
ⓘ Bou Nahas Mine, Oumjrane mining area, Alnif Cercle, Tinghir Province, Drâa-Tafilalet Region, Morocco
General Appearance of Type Material:
Tiny pseudo-hexagonal plates combined in loose clusters.
Place of Conservation of Type Material:
Mineralogical collections of the Canadian Museum of Nature, PO Box 3443, Station “D”, Ottawa, Ontario K1P 6P4, Canada, catalogue number CMNMC 89874.
Geological Setting of Type Material:
Oxidation zone.
Associated Minerals at Type Locality:
Native CopperParatacamite
Reference:
Lykova, Inna, Rowe, Ralph, Poirier, Glenn, Friis, Henrik, Helwig, Kate (2023) Bounahasite, Cu+Cu2+2(OH)3Cl2, a new mineral from the Bou Nahas Mine, Morocco. Mineralogical Magazine, 87 (2) 218-224 doi:10.1180/mgm.2022.133

Synonyms of BounahasiteHide

Other Language Names for BounahasiteHide

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Bounahasite associated with ParatacamiteCu3(Cu,Zn)(OH)6Cl2
1 photo of Bounahasite associated with Native CopperCu

Related Minerals - Strunz-mindat GroupingHide

3.DA.ParahibbingiteFe2(OH)3ClTrig. 3m(32/m) : R3m
3.DA.CentennialiteCaCu3Cl2(OH)6 · nH2O (n ~ 0.7)Trig. 3m(32/m) : P3m1
3.DA.MuonionalustaiteNi3(OH)4Cl2 · 4H2OMon. 2/m : B2/m
3.DA.05MelanothalliteCu2Cl2OOrth. mmm(2/m2/m2/m) : Fddd
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10bClinoatacamiteCu2(OH)3ClMon. 2/m
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3 : R3
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10cLeverettiteCu3Co(OH)6Cl2Trig. 3 : R3
3.DA.10aHibbingiteFe2+2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10cParatacamite-(Ni)Cu3(Ni,Cu)(OH)6Cl2Trig. 3 : R3
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10cTondiiteCu3Mg(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cMisakiiteCu3Mn(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10bIyoiteMnCuCl(OH)3Mon. 2/m : P21/m
3.DA.10cKuliginiteFe3Mg(OH)6Cl2Trig. 3 : R3
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.10b'Unnamed (Cu-Zn Chloride Hydroxide)'CuZnCl(OH)3Mon. 2/m : P21/m
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m(32/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6m2 : P62c
3.DA.30AbhuriteSn21Cl16(OH)14O6Trig. 32 : R32
3.DA.35PonomareviteK4Cu4Cl10OMon. 2/m : B2/b
3.DA.40CalumetiteCaCu4(OH)8Cl2 · 3.5H2OOrth. mmm(2/m2/m2/m) : Cmcm
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.45KhaidarkaniteCu4Al3(OH)14F3 · 2H2OMon. 2/m : B2/m
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.55AvdoniniteK2Cu5(OH)4Cl8 · H2OMon. 2/m : P21/b
3.DA.60DroninoiteNi6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m(32/m) : R3m
3.DA.70ChrysothalliteK6Cu6Tl3+Cl17(OH)4 · H2OTet. 4/mmm(4/m2/m2/m) : I4/mmm
3.DA.70DioskouriiteCaCu4Cl6(OH)4 · 4H2OMon. 2/m : P21/b
3.DA.75FeodosiyiteCu11Mg2Cl18(OH)8 · 16H2OMon. 2/m : P21/b
3.DA.80RomanorloviteK8Cu6Cl17(OH)3Tet. 4/mmm(4/m2/m2/m) : I4/mmm

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 BounahasiteHide

References for BounahasiteHide

Localities for BounahasiteHide

Showing 1 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.
Morocco (TL)
 
  • Drâa-Tafilalet Region
    • Tinghir Province
      • Alnif Cercle
        • Oumjrane mining area
Lykova et al. (2023)
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