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About AlloclasiteHide

(x ≈ 0-0.35)
Steel gray to silver
Specific Gravity:
Crystal System:
For the Greek άλλος ("allos") for "other" and κλάσις ("klasis"), "to break", because its cleavage was believed to be different from marcasite.
See also the chemically very similar Cobaltite and Glaucodot. Compare 'UM1966-01-As:CoNiS'.

Fe content is distinctly higher than that of cobaltite, and the Fe usually occupies about 25% of the (Co,Fe) site (Kingston, 1971).

Classification of AlloclasiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.

12 : AmBnXp, with (m+n):p = 1:2

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
10 : Sulphides etc. of Co

Physical Properties of AlloclasiteHide

Steel gray to silver
Nearly black
VHN100=818 - 940 kg/mm2 - Vickers
perfect on {101}
distinct on {010}
Irregular/Uneven, Sub-Conchoidal
5.95 g/cm3 (Measured)    6.188 g/cm3 (Calculated)

Optical Data of AlloclasiteHide

400nmR1=49.5%R2= 48.2%
420nmR1=48.7%R2= 48.3%
440nmR1=48.2%R2= 48.6%
460nmR1=47.8%R2= 48.8%
480nmR1=47.6%R2= 49.2%
500nmR1=47.6%R2= 49.7%
520nmR1=47.8%R2= 50.1%
540nmR1=48.0%R2= 50.4%
560nmR1=48.1%R2= 50.5%
580nmR1=48.4%R2= 50.6%
600nmR1=48.6%R2= 50.7%
620nmR1=48.8%R2= 50.7%
640nmR1=49.0%R2= 50.5%
660nmR1=49.1%R2= 50.3%
680nmR1=49.1%R2= 50.1%
700nmR1=49.2%R2= 49.9%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 50.7%.
R1 shown in black, R2 shown in red

Chemical Properties of AlloclasiteHide


(x ≈ 0-0.35)
IMA Formula:
Common Impurities:

Crystallography of AlloclasiteHide

Crystal System:
Class (H-M):
2 - Sphenoidal
Space Group:
Cell Parameters:
a = 4.661 Å, b = 5.602 Å, c = 3.411 Å
β = 90.03°
a:b:c = 0.832 : 1 : 0.609
Unit Cell V:
89.06 ų (Calculated from Unit Cell)
Crystals are prismatic parallel [010] , to 5 mm, in columnar to radiating aggregates; commonly massive.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.58 (30)
2.802 (30)
2.750 (100)
2.469 (90)
2.401 (50)
1.817 (70)
1.707 (30)

Type Occurrence of AlloclasiteHide

Synonyms of AlloclasiteHide

Other Language Names for AlloclasiteHide

Relationship of Alloclasite to other SpeciesHide

Other Members of this group:
ClinosaffloriteCoAs2Mon. 2/m : P21/m
CostibiteCoSbSOrth. mm2 : Pmn21
LöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
PararammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pbca
RammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
Safflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
Unnamed (Fe-Ni Antimonide Arsenide)(Fe,Ni)SbAs

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz3 photos of Alloclasite associated with Quartz on mindat.org.
Scorodite2 photos of Alloclasite associated with Scorodite on mindat.org.
Chlorite Group2 photos of Alloclasite associated with Chlorite Group on mindat.org.
Silver2 photos of Alloclasite associated with Silver on mindat.org.
Safflorite2 photos of Alloclasite associated with Safflorite on mindat.org.
Erythrite2 photos of Alloclasite associated with Erythrite on mindat.org.
Fukuchilite2 photos of Alloclasite associated with Fukuchilite on mindat.org.
Arsenopyrite2 photos of Alloclasite associated with Arsenopyrite on mindat.org.
Tetrahedrite1 photo of Alloclasite associated with Tetrahedrite on mindat.org.
Marcasite1 photo of Alloclasite associated with Marcasite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.EB.05aAurostibiteAuSb2Iso. m3 (2/m 3) : Pa3
2.EB.05aCattieriteCoS2Iso. m3 (2/m 3) : Pa3
2.EB.05aErlichmaniteOsS2Iso. m3 (2/m 3) : Pa3
2.EB.05aFukuchiliteCu3FeS8Iso. m3 (2/m 3) : Pa3
2.EB.05aGeversitePtSb2Iso. m3 (2/m 3) : Pa3
2.EB.05aHaueriteMnS2Iso. m3 (2/m 3) : Pa3
2.EB.05aKrut'aiteCuSe2Iso. m3 (2/m 3) : Pa3
2.EB.05aLauriteRuS2Iso. m3 (2/m 3) : Pa3
2.EB.05aPenroseite(Ni,Co,Cu)Se2Iso. m3 (2/m 3) : Pa3
2.EB.05aPyriteFeS2Iso. m3 (2/m 3) : Pa3
2.EB.05aSperrylitePtAs2Iso. m3 (2/m 3) : Pa3
2.EB.05aVaesiteNiS2Iso. m3 (2/m 3) : Pa3
2.EB.10dCostibiteCoSbSOrth. mm2 : Pmn21
2.EB.10aFerroseliteFeSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aFrohbergiteFeTe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10cGlaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
2.EB.10aKulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10aMarcasiteFeS2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.10ePararammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pbca
2.EB.15aClinosaffloriteCoAs2Mon. 2/m : P21/m
2.EB.15aLöllingiteFeAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aRammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.15aSafflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
2.EB.20ArsenopyriteFeAsSMon. 2/m : P21/b
2.EB.20GudmunditeFeSbSMon. 2/m : P21/b
2.EB.25CobaltiteCoAsSOrth. mm2 : Pca21
2.EB.25GersdorffiteNiAsSIso. m3 (2/m 3) : Pa3
2.EB.25Hollingworthite(Rh,Pt,Pd)AsSIso. m3 (2/m 3)
2.EB.25JolliffeiteNiAsSeIso. m3 (2/m 3) : Pa3
2.EB.25MaslovitePtBiTeIso. 2 3 : P21 3
2.EB.25MicheneritePdBiTeIso. 2 3 : P21 3
2.EB.25UllmanniteNiSbSIso. 2 3 : P21 3
2.EB.25MayingiteIrBiTeIso. m3 (2/m 3) : Pa3
2.EB.25KalungaitePdAsSeIso. m3 (2/m 3) : Pa3
2.EB.25MilotaitePdSbSeIso. 2 3 : P21 3

Related Minerals - Dana Grouping (8th Ed.)Hide mm2 : Pmn21

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.10.1Cobaltpentlandite(Co,Ni,Fe)9S8Iso. m3m (4/m 3 2/m) : Fm3m
3.10.3CattieriteCoS2Iso. m3 (2/m 3) : Pa3
3.10.4FrebolditeCoSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.10.5BornhardtiteCo2+Co3+2Se4Iso. m3m (4/m 3 2/m) : Fd3m
3.10.10Safflorite(Co,Ni,Fe)As2Orth. mmm (2/m 2/m 2/m) : Pnnm
3.10.11ClinosaffloriteCoAs2Mon. 2/m : P21/m
3.10.12SkutteruditeCoAs3Iso. m3 (2/m 3) : Im3
3.10.13CobaltiteCoAsSOrth. mm2 : Pca21
3.10.15CostibiteCoSbSOrth. mm2 : Pmn21
3.10.17Glaucodot(Co0.50Fe0.50)AsSOrth. mm2 : Pmn21
3.10.18CarrolliteCu(Co,Ni)2S4Iso. m3m (4/m 3 2/m) : Fd3m

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 AlloclasiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Tschermak (1866) A. Wien, Ber.: 53: 220.
Palache, C., Berman, H., Frondel, C. (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 324.
Kingston, P.W. (1971) Alloclasite, cobalt-iron sulpharsenide. The Canadian Mineralogist: 10: 838-846.
Petruk, W., Harris, D.C., Stewart, J.M. (1971) Characteristics of the arsenides, sulpharsenides, and antimonides. The Canadian Mineralogist: 11: 150-186.
Maurel, C., Picot, P. (1973) Mechanism of transformation of alloclasite into cobaltite. Lautaret deposit. Bulletin de la Societe Francaise de Mineralogie et de Cristallographie: 96: 292-297.
Scott, J.D., Nowacki, W. (1976) The crystal structure of alloclasite, (CoAsS), and the alloclasite-cobaltite transformation. The Canadian Mineralogist: 14: 561-566.
Anthony, Bideaux, Bladh, Nichols (1990) Handbook of Mineralogy, Vol. I: 10.
Hem, S.R., Makovicky, E., Gervilla, F. (2001) Compositional trends in Fe, Co and Ni sulfarsenides and their crystal-chemical implications: Results from the Arroyo de La Cueva deposits, Ronda Peridotite, Southern Spain. The Canadian Mineralogist: 39: 831-853.
Wagner, T., Lorenz, J. (2002) Mineralogy of complex Co-Ni-Bi vein mineralization, Bieber deposit, Spessart, Germany. Mineralogical Magazine: 66: 385.
Yang, H., Downs, R.T. (2008) Crystal structure of glaucodot, (Co,Fe)AsS, and its relationships to marcasite and arsenopyrite. American Mineralogist: 93: 1183-1186.

Internet Links for AlloclasiteHide

Localities for AlloclasiteHide

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.
  • La Rioja Province
    • Vinchina department
      • Villa San José de Vinchina
Brodtkorb (2002): Especies Minerales de la Republica Argentina
  • Queensland
[MinRec 19 p469-490 - "Sielecki, R: The Mount Isa-Cloncurry mineral field"]
      • Cloncurry
        • Malbon
Lawrence et al (1998). End-Member Beyerite from the Alone Hand Mine, Cloncurry, Queensland. Australian Journal of Mineralogy 4(1): 9-11.
Williams et al 2015; HOLWELL, D. A., WILLIAMS, M. R., LILLY, R. M. and MCDONALD, I. (2014), Mineralogical and Fluid Characteristics of the Fluorite-rich Monakoff and E1 Cu-Au Deposits, Cloncurry Region, Queensland, Australia: Implications for Regional F-Ba-rich IOCG Mineralization. Acta Geologica Sinica, 88: 350–351.
      • Selwyn District
Croxford, N. J. W. (1974): Cobalt mineralization at Mount Isa, Queensland, Australia, with references to Mount Cobalt. Mineralium Deposita 9, 105-115.
    • Mount Isa City Shire
      • Mount Isa
Croxford, N. J. W. (1974): Cobalt mineralization at Mount Isa, Queensland, Australia, with references to Mount Cobalt. Mineralium Deposita 9, 105-115.
  • South Australia
    • Yorke Peninsula
      • Moonta
Handbook of Mineralogy
  • Styria
    • Knittelfeld
      • Flatschach
Raith, J. G., Leitner, T., & Paar, W. H. (2015). Orogenic-type copper-gold-arsenic-(bismuth) mineralization at Flatschach (Eastern Alps), Austria. Mineralogy and Petrology, 109(5), 531-553.
  • Vorarlberg
    • Montafon
Tropper, P., Bechter, D., Zambanini, J., Kaindl, R., Vavtar, F. & Lutz, J. (2011): Montangeschichte, Mineralogie, Geochemie und Petrologie der Kupferlagerstätte Bartholomäberg/Silbertal (Montafon, Vorarlberg). Geo.Alp, 8, 20-44.
  • Bahia
    • Maracás
      • Rio Jacaré layered complex
Campbell, R. A. (2012). Platinum Group Element (PGE) Mineralization Associated with Fe-Ti-V Deposit, Rio Jacaré Intrusion, Bahia State, Brazil. Bachelors honour thesis Dalhousie University, Halifax Nova Scotia
  • Sofia City Province
    • Botevgrad
Kerestedjian T (1984) Alloclasite-cobaltite paramorphic transformation in the ores of Vatia deposit, West Balkan Mountain. Geologica Balcanica, 14, 5, 73-78
  • Newfoundland and Labrador
    • Newfoundland
      • Baie Verte Peninsula
        • Baie Verte
          • Consolidated Rambler mine (Rambler Mine)
Stefanie M. Brueckner, Stephen J. Piercey, Jean-Luc Pilote, Graham D. Layne, Paul J. Sylvester (2016): Mineralogy and mineral chemistry of the metamorphosed and precious metal-bearing Ming deposit, Canada. Ore Geology Reviews 72, 914–939.
  • Ontario
    • Timiskaming District
      • Cobalt-Gowganda region
          • Casey Township
          • Coleman Township
Reiner Mielke
Reiner Mielke (2009)
Handbook of Mineralogy; Petruk (1971): The Silver-Arsenide Deposits of the Cobalt-Gowganda Region, Ontario. Can. Mineral. 11, 150-186
        • Elk Lake area
          • Mickle Township
Ann P.Sabina (2000), Rocks and Minerals for the Collector, Cobalt-Belleterre-Timmins, Ontario and Quebec. GSC Misc. Report 57,p.74
        • Gowganda area
          • Nicol Township
Handbook of Mineralogy
  • Inner Mongolia
    • Bayan Nur League (Bayannao'er Prefecture)
      • Urad Rear Banner (Wulate Houqi)
Zhaolong Li, Wendou Xu, Yijie Xi, and Xinming Jiang (1981): Geology and Prospecting 17(6), 7-14
  • Yunnan
    • Yuxi
      • Xinping Co.
Yuanren Chen (1976): Geology and Prospecting 12(6), 23-28
Czech Republic
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002(7/8), 63-65
Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V, Vavrín I, Skála R, Sejkora J, Drábek M (2003) Primary minerals of the Jáchymov ore district, Journal of the Czech Geological Society 48, 19-147
  • Satakunta
    • Eurajoki
Pere Tuomas (2009) Fault-related local phenomena in the bedrock of Olkiluoto with particular Reference to Fault Zone. OL-BFZ100 Posiva Working Report 2009-125
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • Villar-d'Arêne
Handbook of Mineralogy
R. Pierrot, P. Picot, P.A. Poulain, "Inventaire Minéralogique de la France : Hautes-Alpes", BRGM, 1972
  • Baden-Württemberg
    • Black Forest
      • Pforzheim
        • Würm
Lapis, 18 (2), 13-24
      • Schenkenzell
        • Wittichen
          • Burgfelsen
No reference listed
    • Freiburg
      • Ortenaukreis
        • Wolfach
          • Oberwolfach
            • Rankach valley
KOLITSCH, U. (1996): Cobaltit, Skutterudit und Alloklas von der Grube Clara bei Oberwolfach. - Erzgräber 10 (1), 56-59.
  • Hesse
    • Main-Kinzig
Wagner, T., Lorenz, J. (2002) Mineralogy of complex Co-Ni-Bi vein mineralisation, Bieber deposit, Spessart, Germany. Mineralogical Magazine, 66, 385-407.
  • North Rhine-Westphalia
    • Siegerland
      • Siegen
        • Eiserfeld
Wittern: "Mineralfundorte in Deutschland", 2001
          • Kohlenbach Valley
Henrich, M. (2009): Mineralien-Welt 20 (5), 14-27.
Golze, R.; Henrich, M.; Hucko, S.; Stötzel, N. (2013): Siegerland & Westerwald. Bergbaugeschichte - Mineralienschätze - Fundorte, pp. 371-379.
        • Gosenbach
Wittern: "Mineralfundorte in Deutschland", 2001
  • Rhineland-Palatinate
    • Altenkirchen
      • Betzdorf-Gebhardshain
        • Kirchen
Golze, R.; Henrich, M.; Hucko, S.; Stötzel, N. (2012): Siegerland & Westerwald. Bergbaugeschichte - Mineralienschätze - Fundorte. 800 S. Bode-Verlag. S.452-58.
        • Schutzbach
  • Saxony
    • Bautzen
      • Sohland an der Spree
Sandmann, D., & Gutzmer, J. (2015). Nature and distribution of PGE mineralisation in gabbroic rocks of the Lusatian Block, Saxony, Germany Art und Verbreitung der PGE-Mineralisation in den gabbroiden Gesteinen des Lausitzer Blocks, Sachsen, Deutschland. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, 166(1), 35-53.
  • Odisha
    • Baula Complex
Goldschmidt Conference Abstracts (2011) Mineralogical Magazine p1968
  • Co. Kerry
    • Killarney
S. MORETON, P. DAVIDSON, D. I. GREEN and G. RYBACK (1999) Unusual Supergene Minerals at Muckross Mine, Killarney, Co. Kerry. Irish Journal of Earth Sciences 17:19-24
  • Sardinia
    • Sassari Province
      • Ozieri
Ciriotti, M.E. & Blass, G. (2010): Pot-pourri 2009: identificazioni UKiS AMI Minerali italiani di interesse. Micro (UK Report), 1/2010, 124-127.
    • South Sardinia Province
      • Gonnosfanadiga
- Sabelli C. (2000): Rooseveltite e "agardite-(Ce)".Riv. Mineral. Ital., 1/2000, 40-43.
  • Nara
    • Yoshino district
      • Totsukawa village
Kingstone (1971) Canadian Mineralogist, 10, 838-846.
  • Wakayama
    • Otsuga-mura
      • Nishimuro-gun
Ohnishi et al (2004) Koubutsu-Gakkai Kou'en-Youshi, 134.
  • Akmola Region
Kovalev, K. R., Syzdykov, S. O., Kalinin, Y. A., Naumov, E. A., Baranov, V. V., Sukhorukov, V. P., ... & Zhimulev, F. I. (2018). The Raigorodok stockwork gold-sulfide-quartz deposit in the North Kazakhstan gold ore province. Russian Geology and Geophysics, 59(11), 1482-1496.
  • Selenge Aimag
    • Baruun-Haraa
Khishgee, C., & Akasaka, M. (2015). Mineralogy of the Boroo Gold Deposit in the North Khentei Gold Belt, Central Northern Mongolia. Resource Geology, 65(4), 311-327.
  • Drâa-Tafilalet
    • Ouarzazate Province
      • Tazenakht
S. Weiß: Lapis 31(7/8), 72-73 (2006)
          • Agoudal
Georges Favreau collection
Gunnar Färber and Thomas Witzke (2010) Lapis, 35, #11, 35-36.
  • Buskerud
    • Kongsberg
Kullerud, K., Kotková, J. & Škoda (2016): Ag-Sb bearing minerals from the Kongsberg Silver Deposit, Buskerud, Norway. Norsk mineralsymposium 2016, 53-59.
Papua New Guinea
  • Central Province
    • Astrolabe mineral field
Noku, S.K., Espi, J.O., Matsueda, H. (2012) Magmatic contributions to the mineralization of the Laloki and Federal Flag strata-bound massive sulfide deposits, Papua New Guinea: Sulfur isotope evidence. Paper presented at PNG Research, Science and Technology Conference, Pacific Adventist University, Port Moresby, Papua New Guinea.
  • Aveiro
    • Albergaria-a-Velha
      • Branca
Marques de Sá, J. & Leal Gomes, C. (2010): Les mines de cuivre et nickel de Palhal et Telhadela, Albergaria-a-Velha, Aveiro, Portugal. Le Règne Minéral, 92, 36-47.
  • Beja
    • Castro Verde
      • Santa Bárbara de Padrões
Cabri, L. J., Gaspar, O. C., Lastra, R., & McMahon, G. (1998). Distribution of gold in tin-rich samples from the Corvo orebody, Portugal. The Canadian Mineralogist, 36(5), 1347-1360.
Romania (TL)
  • Caraş-Severin
    • Banat Mts
      • Oraviţa-Ciclova Cu-Mo-(W) ore field
        • Oraviţa (Oravicza; Orawitza)
Tschermak(1866); Canadian Mineralogist:11:150(1971) & 14:561(1976).; Kingston P W (1971) On alloclasite, a Co-Fe sulpharsenide, The Canadian Mineralogist, 10, 838-846
  • Bashkortostan
    • Baymak-Buribay District
Melekestseva, I. Yu. (2005): The first discovery of alloclasite in the Urals. Doklady Earth Sciences 400, 105-108.
  • Sverdlovsk Oblast
Azovskova, O. B., Malyugin, A. A., Nekrasova, A. A., & Yanchenko, M. Y. (2013, January). Pyrite from zones of Mz-Kz reactivation of large faults on the eastern slope of the Ural Mountains, Russia. In Proceedings of World Academy of Science, Engineering and Technology (No. 79, p. 182). World Academy of Science, Engineering and Technology (WASET).
  • Tuva
Vinogradova, R. A.; Zakharov, E. P.; Krutov, G. A. (1985): Alloclasite from the Khovu-Aksy deposit (Tuva ASSR). Novye Dannye o Mineralakh 32, 188-191.
Gas’kov, I. V. (2008). New data on the correlation of skarn and gold mineralization at the Tardan deposit (northeastern Tuva). Russian Geology and Geophysics, 49(12), 923-931.
  • Andalusia
    • Huelva
      • Alosno
        • Tharsis
          • Tharsis Mines
Tornos, F., González Clavijo, E., and Spiro, B. (1998): Mineralium Deposita 33, 150-169.
      • Minas de Riotinto
Bocamina, (4), (1999) 50-86.
  • Aragón
    • Huesca
      • San Juan de Plan
Calvo, M. (2008). Minerales de Aragón. Prames, Zaragoza. 461 pags.
  • England
    • Cornwall
      • Penzance
        • Wherrytown
[Embrey & Symes, 1987, 39 - "Minerals of Cornwall and Devon"]
      • St Hilary
Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines & Minerals, 20, 7-37.
    • Cumbria
      • Allerdale
        • Above Derwent
          • Causey Pike
            • Scar Crag
BMS Database; Handbook of Mineralogy; R. A. Ixer, C. J. Stanley and D. J. Vaughan (1979) Cobalt-, Nickel-, and Iron-Bearing Sulpharsenides from the North of England. Mineralogical Magazine 43:389-395.
  • Alaska
    • Bethel Census Area
      • McGrath District
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • Arizona
    • Yavapai Co.
      • Mayer
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 102.
  • Pennsylvania
    • Montgomery Co.
      • Marlborough Township
        • Perkiomenville
Handbook of Mineralogy
  • Washington
    • Snohomish Co.
      • Sultan District
        • Sultan Basin
          • Little Chief Peak
Bart Cannon Collection
Mineral and/or Locality  
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