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About ClinoatacamiteHide

Green to dark greenish-black, greenish-blue.
Crystal System:
Member of:
Named in allusion to its monoCLINic morphology and relationship to Atacamite.
Polymorph of:
Easily confused with the closely related paratacamite.
Note that "anatacamite", originally considered a triclinic dimorph, was later recognised as twinned clinoatacamite and discredited.

Classification of ClinoatacamiteHide


D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
Dana 7th ed.:

Physical Properties of ClinoatacamiteHide

Green to dark greenish-black, greenish-blue.
Green to white.

Optical Data of ClinoatacamiteHide

Biaxial (-)
RI values:
nα = 1.830 nβ = 1.850 nγ = 1.880
Measured: 75° , Calculated: 80°
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of ClinoatacamiteHide

IMA Formula:

Crystallography of ClinoatacamiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.157(2) Å, b = 6.814(3) Å, c = 9.105(5) Å
β = 99.65(4)°
a:b:c = 0.904 : 1 : 1.336
Unit Cell V:
376.58 ų (Calculated from Unit Cell)
Pseudo-rhombohedral; complex intergrowths/twins.
Very common, on {100}.

Type Occurrence of ClinoatacamiteHide

Synonyms of ClinoatacamiteHide

Other Language Names for ClinoatacamiteHide

Relationship of Clinoatacamite to other SpeciesHide

Member of:
Other Members of this group:
AtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
BotallackiteCu2(OH)3ClMon. 2/m : P21/m
GillarditeCu3Ni(OH)6Cl2Trig. 3m (3 2/m) : R3m
HaydeeiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : P3m1
HerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : R3m
IyoiteMnCuCl(OH)3Mon. 2/m : P21/m
KapellasiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
KempiteMn2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
LeverettiteCu3Co(OH)6Cl2Trig. 3 : R3
MisakiiteCu3Mn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
ParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3m (3 2/m)
Paratacamite-(Mg)Cu3(Mg,Cu)(OH)6Cl2Trig. 3 : R3
Paratacamite-(Ni)Cu3(Ni,Cu)(OH)6Cl2Trig. 3 : R3
TondiiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : R3m
Unnamed (Cu-Zn Chloride Hydroxide)CuZnCl(OH)3Mon. 2/m : P21/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
49 photos of Clinoatacamite associated with QuartzSiO2
19 photos of Clinoatacamite associated with AtacamiteCu2(OH)3Cl
18 photos of Clinoatacamite associated with ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
17 photos of Clinoatacamite associated with MalachiteCu2(CO3)(OH)2
7 photos of Clinoatacamite associated with GypsumCaSO4 · 2H2O
6 photos of Clinoatacamite associated with CalciteCaCO3
5 photos of Clinoatacamite associated with Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2O
3 photos of Clinoatacamite associated with CumengeitePb21Cu20Cl42(OH)40 · 6H2O
3 photos of Clinoatacamite associated with CupriteCu2O
3 photos of Clinoatacamite associated with CerussitePbCO3

Related Minerals - Nickel-Strunz GroupingHide

3.DA.CentennialiteCaCu3Cl2(OH)6 · nH2O (n ~ 0.7)Trig. 3m (3 2/m) : P3m1
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3m (3 2/m)
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m (3 2/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6 m2 : P62c
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.45KhaidarkaniteNa0.34Cu4Al3(OH)14F3 · 2H2OMon.
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.55AvdoniniteK2Cu5(OH)4Cl8 · H2OMon. 2/m
3.DA.60DroninoiteNi6Fe2+3(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m

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.

References for ClinoatacamiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Grice, J. D. Szymański, J. T., and Jambor, J. L. (1996), The crystal structure of clinoatacamite, a new polymorph of Cu2(OH)3Cl. Canadian Mineralogist: 34: 73-78.
Jambor, J. L., Dutrizac, J. E., Roberts, A. C., Grice, J. D. and Szymański, J. T. (1996): Clinoatacamite, a new polymorph of Cu2(OH)3Cl, and its relationship to paratacamite and "anarakite". Canadian Mineralogist: 34, 61-72.
Mineralogical Record: 27: 463.
Malcharek, T. & Schlüter, J. (2008): The crystal structure of clinoatacamite and the quest for paratacamite. Poster, Annual Meeting of the DMG, Berlin, Germany, September 14-17, 2008; CD with abstracts, Abs. no. 527.
A S Wills and J-Y Henry (2008): On the crystal and magnetic ordering structures of clinoatacamite, γ-Cu2(OD)3Cl, a proposed valence bond solid. J. Phys.: Condens. Matter 20 472206.
Malcherek, T. & Schlüter, J. (2010): Anatacamite from La Vendida mine, Sierra Gorda, Atacama desert, Chile: a triclinic polymorph of Cu2(OH)3Cl. Neues Jahrbuch für Mineralogie - Abhandlungen, 187, 307-312. [as both clinoatacamite and "anatacamite" (later found to be twinned clinoatacamite and discredited)]
Malcherek, T., Mihailova, B., Welch, M.D. (2017): Structural phase transitions of clinoatacamite and the dynamic Jahn–Teller effect. Physics and Chemistry of Minerals 44, 307-321.
Krivovichev, S.V., Hawthorne, F.C., Williams, P.A. (2017): Structural complexity and crystallization: the Ostwald sequence of phases in the Cu2(OH)3Cl system (botallackite–atacamite–clinoatacamite). Struct. Chem. 28, 153-159.

Internet Links for ClinoatacamiteHide

Localities for ClinoatacamiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Atlantic Ocean
  • Mid-Atlantic Ridge complex
Gablina, I.F., Semkova, T.A., Stepanova, T.V., and Gor'kova, N.V. (2006): Lithology and Mineral Resources 41(1), 27-44.
Gablina, I. F., Dobretzova, I. G., Laiba, A. A., Narkevsky, E. V., Maksimov, F. E., & Kuznetsov, V. Y. (2018). Specific Features of Sulfide Ores in the Pobeda Hydrothermal Cluster, Mid-Atlantic Rise 17° 07′–17° 08′ N. Lithology and Mineral Resources, 53(6), 431-454.
  • New South Wales
    • Kennedy Co.
      • Goonumbla
A.L. McLean, J.Chapman, J.L. Sharpe and P.A. Williams (2004): The mineralogy of the oxidised zone of the E26 orebody at Northparkes, New South Wales. Australian Journal of Mineralogy 10, 53-57.
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Australian Jour.Min. v.6, no. 1
  • Western Australia
    • Coolgardie Shire
      • Widgiemooltha
Colchester et al., 2007
    • East Pilbara Shire
      • Rudall River District
Downes, P. J., Hope, M., Bevan, A. W. R. and Henry, D. A. (2006): Chalcocite and associated secondary minerals from the Telfer gold mine, Western Australia. Australian Journal of Mineralogy 12, 25-42.
  • Lower Austria
    • Industrieviertel
Kolitsch, U. & Götzinger, M. A. (2013): 1816) Azurit, Cuprit, Klinoatacamit und sekundäres Kupfer in einem Kupfergusskuchen aus dem Stadtgebiet Neunkirchen, Niederösterreich. 129 in Niedermayr, G. et al. (2013): Neue Mineralfunde aus Österreich LXII. Carinthia II, 203./123., 91-146.
  • Antofagasta
    • Antofagasta Province
      • Mejillones
        • Mejillones peninsula
SEM-EDS and Raman Spectroscopy by Joy Desor
SEM-EDS and Raman Spectroscopy by Joy Desor
SEM-EDS and Raman Spectroscopy by Joy Desor
      • Santa Catalina
        • Guanaco (Huanaco)
samples analysed by Jochen Schluter, Gerhard Mohn and Joy Desor
      • Sierra Gorda District
        • Caracoles
SEM-EDS and Raman Spectroscopy by Joy Desor
analysed material from dr. Jochen Schluter (curator Hamburg mineralogical museum) - Arturo Molina collection
Malcherek, T. & Schlüter, J. (2010): Anatacamite from La Vendida mine, Sierra Gorda, Atacama desert, Chile: a triclinic polymorph of Cu2(OH)3Cl. Neues Jahrbuch für Mineralogie - Abhandlungen, 187, 307-312. [as both clinoatacamite and "anatacamite" (later found to be twinned clinoatacamite and discredited)]
    • El Loa Province
      • Calama
        • Chuquicamata District
Canadian Mineralogist (1996): 34: 61-72; Mineralogical Record: 27: 463.
    • Tocopilla Province
C. Ruiz Fuller/F. Peebles (1988): "Yacimientos metalíferos de Chile": Fondecyt, Stgo de Chile.
      • Tocopilla District
Raman Spectroscopy, Wet Chemical by Joy Desor and Gerhard Möhn
  • Arica and Parinacota
    • Arica Province
      • Caleta Vítor district
Samples analysed by Dr. Jochen Schluter (Hamburg University), Germany.
  • Atacama
    • Chañaral Province
      • El Salado
samples were analysed by Robert Jenkins at Arizona State University
    • Copiapó Province
samples analysed by Gerhard Moehn
      • Tierra Amarilla
        • Pampa Larga district
SEM-EDS and Raman Spectroscopy by Joy Desor
  • Tarapacá
    • Iquique Province
      • Salar Grande
Samples analysed as "anatacamite" (later found to be twinned clinoatacamite) by Anthony Kampf, Curator Emeritus of Mineral Sciences at NHM of LAC, California
      • Santa Rosa-Huantajaya District
SEM-EDS and Raman Spectroscopy by Joy Desor
  • Xinjiang
    • Tulufan Prefecture (Turfan Prefecture; Turpan Prefecture)
      • Shanshan Co. (Piqan Co.; Pichan Co.)
        • Kanggur-Xifengshan gold belt
Kaiyin Bai and Zhaoxin Han (2007): Northwestern Geology 40(2), 114-117
  • Saxony-Anhalt
    • Stassfurt Potash Deposit
  • Schleswig-Holstein
    • Helgoland
Markus Gerstmann collection (SXRD-analysed by Uwe Kolitsch)
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamariza)
            • Kamariza Mines (Kamareza Mines)
              • Hilarion area
J. Gröbner und U. Kolitsch (2002): Neufunde von Laurion aus den Jahren 2001 und 2002. Aufschluss 53 (5-6), 363-371.
Möckel, S. (2000): Strashimirit und 11 weitere Neubestimmungen aus Lavrion (GR). Lapis 25 (7-8), 74.
        • Lavrion District slag localities
          • Agios Nikolaos [St Nicholas] area
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (II). Mineralien-Welt 25 (2), 82-95 (in German).
  • Isfahan
    • Nain County (Nayin County)
      • Anarak District
Jambor, J.L. et al. (1996). "Clinoatacamite a new polymorph of Cu2(OH)3Cl and its relationship to paratactamite and "anarakite"." Canadian Mineralogist, 34,pp:61-72.
  • Munster
    • Co. Waterford
      • Bonmahon (Bunmahon)
        • Knockmahon
Braithwaite, R.S.W. & Wilson, J.I. (2001) J. Russell Soc., 7(2), p.96.
  • Tuscany
    • Livorno Province
      • Elba Island
        • Capoliveri
          • Cape Calamita Mine (Calamita Mine)
P. Rögner, M. Hanauer, F. Senesi (2000) - Elba orientale: nuovi ritrovamenti - Riv. Min. It., 24, 2: 102-109.
  • Sonora
    • Santa Cruz Municipality
      • Cuitaca
Peter Megaw collection, Marcus Origlieri analysis
  • Nordland
    • Tysfjord
Husdal, T. (2019) Nyfunn av mineraler fra Tysfjord-pegmatittene, Nordland. Norsk Mineralsymposium 2019: 31-46
Papua New Guinea
  • New Ireland Province
    • Lihir Island area
Renno, A. D., Franz, L., Witzke, T., & Herzig, P. M. (2004). The coexistence of melts of hydrous copper chloride, sulfide and silicate compositions in a magnesiohastingsite cumulate, TUBAF seamount, Papua New Guinea. The Canadian Mineralogist, 42(1), 1-16.
  • Ica
    • Pisco Umay
Richard Dale collection
  • Altai Krai
    • Rudnyi Altai
Pekov, I.V., Lykova, I.S. (2011) Rubtsovskoe deposit, - Mineralogical Almanac, Vol. 16, 96 pp (in Rus).
  • Andalusia
    • Almería
      • Cuevas del Almanzora (Cuevas de Vera)
        • Sierra Almagrera
          • Jaroso Ravine
Georges FAVREAU collection
      • Huércal-Overa
        • Cuesta Alta
          • Cerro Minado Mines
VIÑALS, J., FAVREAU, G., and EYTIER C. & J.-R. (2010): Bobkingite, capgaronnite, juanitaite, gerhardtite, reevesite and other rare minerals from Cerro Minado, Huercal-Overa (Almería). Mineral Up, 4, 3, 6-23 Versions simultaneously published in Catalan (Mineralogistes de Catalunya); in Spanish version (Revista de Minerales).
      • Níjar
        • Rodalquilar
          • Cerro de los Guardias
Georges Favreau collection Christiane & Jean-Robert Eytier collection
        • San José
Georges FAVREAU collection
    • Córdoba
      • El Guijo
Calvo, M. (2009). Minerales y Minas de España. Vol III. Halogenuros. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 267 págs.
  • Aragón
    • Zaragoza
      • Fombuena
Calvo, G., Viñals, J. y Calvo, M. (2008). Presencia de delafossita, gibbsita y cianotriquita en un yacimiento cuprífero del barranco de la Sierra, Fombuena (Zaragoza). Macla, 9, 59-60.
  • Valencian Community
    • Castellón
Mineralogía de la concesión San Rafael, Villahermosa del Río, Castellón, España
        • San Rafael claim
- Cócera, H., Menor-Salván, C. and Muñoz-Alvarado, R. (2010): Mineralogía de la concesión San Rafael, Villahermosa del Río, Castellón, España. Acopios, 1, 1-51. [ ;]
- Cócera, H., Menor-Salván, C. and Muñoz-Alvarado, R. (2010): Mineralogía de la concesión San Rafael, Villahermosa del Río, Castellón, España. Acopios, 1, 1-51. [ ;]
  • England
    • Cornwall
      • St Just
        • Trewellard
Christine Rust collection
    • Leicestershire
      • Hinckley and Bosworth
        • Stanton under Bardon
          • Cliffe Hill Quarry
UKJMM 26:31-42
  • Scotland
    • Argyll and Bute
      • Isle of Islay
[J.Russell Soc. 1998:38]
      • Lochgilphead
[J.Russell Soc. 1998:38]
  • Arizona
    • La Paz Co.
      • Silver Mining District
XRD-analysed as "anatacamite" (later found to be twinned clinoatacamite) by Dr. Anthony Kampf.
    • Maricopa Co.
      • Osborn Mining District
        • Tonopah
          • Belmont Mountain
Raman analyzed at the University of Arizona.
      • Painted Rock Mts
        • Painted Rock Mining District
          • Theba
PXRD analyzed by Tony Kampf; also as "anatacamite" (later found to be twinned clinoatacamite) PXRD analyzed by Tony Kampf; Bruce Murphy Collection
    • Pinal Co.
      • Mammoth Mining District
        • Tiger
          • St. Anthony deposit
Raman analyzed at the University of Arizona.
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