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About NantokiteHide

Colourless, white to greyish, greenish
2 - 2½
Specific Gravity:
3.93 - 4.3
Crystal System:
For the locality at Nantoko, Copiapó, Chile.
Chlorargyrite Group.

A rare anhydrous copper chloride, known only from arid environments and slags (as tetrahedral crystals). Colourless and transparent when fresh. Alters superficially to "paratacamite" (or rather "clinoatacamite"?) when exposed in air.

Classification of NantokiteHide

Approved, 'Grandfathered' (first described prior to 1959)

A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.

1 : AX

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
2 : Halides of Cu

Physical Properties of NantokiteHide

Colourless, white to greyish, greenish
2 - 2½ on Mohs scale
On {011}.
3.93 - 4.3 g/cm3 (Measured)    4.22 g/cm3 (Calculated)

Optical Data of NantokiteHide

RI values:
n = 1.930(5)
Anomalously anisotropic
Isotropic minerals have no birefringence
Surface Relief:
Very High
On synthetic material.

Chemical Properties of NantokiteHide


Crystallography of NantokiteHide

Crystal System:
Class (H-M):
4 3m - Hextetrahedral
Space Group:
F4 3m
Cell Parameters:
a = 5.407 Å
Unit Cell V:
158.08 ų (Calculated from Unit Cell)
Massive, granular; small white tetrahedra.

Type Occurrence of NantokiteHide

Synonyms of NantokiteHide

Other Language Names for NantokiteHide

Relationship of Nantokite to other SpeciesHide

Other Members of this group:
BromargyriteAgBrIso. m3m (4/m 3 2/m) : Fm3m
ChlorargyriteAgClIso. m3m (4/m 3 2/m) : Fm3m
MarshiteCuIIso. 4 3m : F4 3m
Miersite(Ag,Cu)IIso. 4 3m : F4 3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Nantokite associated with MalachiteCu2(CO3)(OH)2
1 photo of Nantokite associated with CupriteCu2O
1 photo of Nantokite associated with AtacamiteCu2(OH)3Cl

Related Minerals - Nickel-Strunz GroupingHide

3.AA.Brontesite(NH4)3PbCl5Orth. mmm (2/m 2/m 2/m) : Pnma
3.AA.05MarshiteCuIIso. 4 3m : F4 3m
3.AA.05Miersite(Ag,Cu)IIso. 4 3m : F4 3m
3.AA.10IodargyriteAgIHex. 6mm : P6mm
3.AA.15BromargyriteAgBrIso. m3m (4/m 3 2/m) : Fm3m
3.AA.15ChlorargyriteAgClIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20CarobbiiteKFIso. m3m (4/m 3 2/m)
3.AA.20GriceiteLiFIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20HaliteNaClIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20SylviteKClIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20VilliaumiteNaFIso. m3m (4/m 3 2/m) : Fd3m
3.AA.25SalammoniacNH4ClIso. 4 3 2
3.AA.25LafossaiteTl(Cl,Br)Iso. m3m (4/m 3 2/m) : Pm3m
3.AA.30Calomel(Hg2)2+Cl2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.AA.30Moschelite(Hg2+2)I2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.AA.35NeighboriteNaMgF3Orth. mmm (2/m 2/m 2/m)
3.AA.40ChlorocalciteKCaCl3Orth. mmm (2/m 2/m 2/m) : Pnma
3.AA.55ChallacolloiteKPb2Cl5Mon. 2/m : P21/b
3.AA.60HephaistositeTlPb2Cl5Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide,Cu)IIso. 4 3m : F4 3m 4 3m : F4 3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.2.3EriochalciteCuCl2 · 2H2OOrth. mmm (2/m 2/m 2/m)
8.2.4AtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
8.2.5ParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3m (3 2/m)
8.2.6BotallackiteCu2(OH)3ClMon. 2/m : P21/m
8.2.9AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
8.2.10ClaringbulliteCu4ClF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.2.11MarshiteCuIIso. 4 3m : F4 3m
8.2.12MitscherlichiteK2CuCl4 · 2H2OTet. 4/mmm (4/m 2/m 2/m)

Other InformationHide

Special Storage/
Display Requirements:
Unstable in humid air, and transforms slowly into greenish secondary Cu-hydroxchlorides. Alters to "paratacamite" on exposure.
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 NantokiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Breithaupt, J.F.A. (1868) Nantokit, ein neues Mineral. Berg- und Hüttenmännische Zeitung: 27: 3-3.
Breithaupt, J.F.A. (1872) Mineralogische Notizen. Nantokit. Neues Jahrbuch für Mineralogie, Geologie und Paläontologie: 1872: 814-820.
Armstrong and Carmichael (1894) Proceedings of the Royal Society of New South Wales: 28: 96.
Wyckoff and Posnjak (1922) Journal of the American Chemical Society: 44: 30.
Barth and Lunde (1925) Norsk Geol. Tidsskr.: 8: 281.
Palache, C., Berman, H., Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 18-19.
Pfitzner, A., Lutz, H.D. (1993) The systems CuCl-MIICl2 (M=Mn, Cd) - crystal structures of Cu2MnCl4 and γ-CuCl. Zeitschrift für Kristallographie: 205: 165-175.

Internet Links for NantokiteHide

Localities for NantokiteHide

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.
  • New South Wales
    • Yancowinna Co.
      • Broken Hill district
Handbook of Mineralogy
Mineralogical Magazine 1894 10 : 326-327
  • Queensland
    • Cloncurry Shire
      • Cloncurry
Handbook of Mineralogy
Handbook of Mineralogy; Sharpe, J.L. & Williams, P.A. (2000) Exotic Secondary Copper Mineralization in the Eastern Mt Isa Block, Northwest Queensland. The Royal Society of New South Wales 133:31-32
Australian Journal of Mineralogy Volume 5 Number 2
Chile (TL)
  • Atacama
    • Copiapó Province
      • Copiapó
        • Nantoco (Nantoko)
Dana 6 (1892): 154; Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume II, John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 18.
  • Qinghai
    • Haixi Mongol and Tibetan Autonomous Prefecture
      • Golmud City (Ge'ermu Co.)
        • Qimantage Mts
Yi, L., Gu, X., Lu, A., Li, X., Zhang, D., Wang, Z., ... & Zuo, H. (2017). Atacamite and nantokite in Kaerqueka copper deposit of Qimantag area: Evidence for Cenozoic climate evolution of the Qaidam Basin. Journal of Earth Science, 28(3), 492-499.
Czech Republic
  • Ústí nad Labem Region
    • Krupka (Graupen)
      • Steinknochen area (Lux vein)
Lapis 23(4), 18-34 (1998)
  • Saxony-Anhalt
    • Mansfeld Basin
      • Hettstedt
        • Copper-Silver smelter (Gottesbelohnung smelter) slag locality
Mineralien Welt 15 Jg.Heft 2 März-April 2004 and Mineralien Welt 19Jg Heft1 Jan -Febr, 2008 Hoorst Knoll
  • South Aegean
    • Milos
      • Serifos Island
        • Avissalos (Avyssalos; Avessalos; Aghriomelisa Mountain)
Fritz Schreiber collection (analysed by U. Kolitsch)
  • Madhya Pradesh
    • Jabalpur division
      • Balaghat District
        • Baihar Tehsil
          • Padritola
Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
  • Aosta Valley
    • Brusson
· Maletto, G., Bittarello, E., Ciriotti, M.E., Piccoli, G.C., Brizio, P., Castello, P., Cesti, G., Moroni, M. (2016): La miniera d'oro di Chamousira (Ciamusera), Brusson, Val d'Ayas, Valle d'Aosta. Micro, 14,3, 98-151.
  • Campania
    • Naples
AA. VV., 1996. Collezionare minerali. Hobby & Work.
  • Liguria
    • Genoa
      • Genoa
        • Varenna Valley
Rivista Mineralogica Italiana, 2 (Avril/Juin), 175-188.
  • Tuscany
    • Livorno Province
      • Campigliese (Campiglia Mountains; Campiglia Ridge)
        • Campiglia Marittima
        • Sassetta
          • Canina Valley
Jansen, H. & van den Berg, W. (1998): Slakkenmineralen in Toscane (Italië). Gea, no. 4, 109-117 (in Dutch).
        • Suvereto
Luigi Chiappino data
      • Piombino
Franzini, M., Perchiazzi, N. (1992): I minerali delle scorie ferrifere etrusche di Baratti (Livorno). Atti della Società Toscana di Scienze Naturali, Memorie, Serie A, 99, 43-77; Franzini, M., Perchiazzi, N., Bartoli, M.L., Chiappino, L. (1992): Baratti (LI): una nuova località mineralogica italiana analoga al Laurion. Rivista Mineralogica Italiana, 15, 2 (2-1992), 67-75 [2a parte]; Cerutti, G., Preite, D. (1995): Mineralien der etruskischen Schlacken von Baratti, Toskana. Lapis, 20, 4, 13-18 and 50.
  • Karaganda Region
Handbook of Mineralogy; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
  • Durango
    • Mapimí Municipality
      • Mapimí
Rocks & Min.: 56:247.
  • Tamaulipas
    • Villagrán Municipality
      • San José
Panczner (1987):281.
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Djebel Saghro (Jbel Saghro)
        • Bou Skour district
Georges FAVREAU collection
  • Khyber Pakhtunkhwa
    • Malakand District (Malakand Agency)
Ahmed, Z. (1991). Comparison of the geochemistry of ophiolitic pyroxenites with a strongly fractionated dyke of pyroxenite from the Sakhakot-Qila Ophiolite, Pakistan. Chemical geology, 91(4), 335-355.
  • Lesser Poland Voivodeship
    • Chrzanów Co.
      • Gmina Trzebinia
Coppola, V., Boni, M., Gilg, A., and Strzelska-Smakowska, B. (2009): Mineralium Deposita 44, 559-580.
Coppola, V., Boni, M., Gilg, A., and Strzelska-Smakowska, B. (2009): Mineralium Deposita 44, 559-580.
  • Silesian Voivodeship
Coppola, V., Boni, M., Gilg, A., and Strzelska-Smakowska, B. (2009): Mineralium Deposita 44, 559-580.
  • Chelyabinsk Oblast
Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
  • Andalusia
    • Almería
      • 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).
  • England
    • Cornwall
      • St Just
        • Trewellard
[Golley & Williams, 1995, 44 - "Cornish Mineral Reference Manual"]
  • Arizona
    • Cochise County
      • Bisbee
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 310; Graeme, R. (1993), Bisbee revisited, Min.Rec.: 24: 421-436.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 398; Graeme, R. (1993), Bisbee revisited, Min.Rec.: 24: 421-436.
  • Colorado
    • San Juan Co.
      • Eureka Mining District
        • Gladstone
          • Bonita Peak
PXRD by John Attard
  • Connecticut
    • Fairfield County
      • Stamford
Henderson, William, A., Jr. (1967), A Copper Analog of Laurium, Greece. Rocks & Minerals: 42(5): 273-276.
  • Michigan
    • Ontonagon Co.
      • Mass City
Rocks & Min.:58:112.
  • New Mexico
    • Grant Co.
Handbook of Mineralogy
    • Socorro Co.
      • Magdalena District
        • Magdalena
Collection of Patrick Haynes. Found in what appears to be efflorescent material, associated with anglesite, cerussite, brochantite and antlerite.
  • New York
    • St. Lawrence Co.
      • Balmat-Edwards Zinc Mining District
Rocks & Minerals (2008) Volume 83:3 Pages: 224 - 239
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