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About LammeriteHide

Franz Lammer
a solid solution is suggested basing on the data of Filatov et al. (1984), resulting in Cu3[(AsxP1-x)O4]2 (x=0.23-0.62)
Dark green
Adamantine, Vitreous
3½ - 4
Specific Gravity:
Crystal System:
For Franz Lammer (1914-1997), mineral collector of Leoben, Austria, who provided the first specimen.
Dimorph of:
May form a solid solution with its possible P (phosphate) analogue, 'UM1984-21-PO:AsCu'.

Classification of LammeriteHide

First Published:

A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th ed.:

3 : (AB)3(XO4)2

20 : Arsenates (also arsenates with phosphate, but without other anions)
1 : Arsenates of Cu

Physical Properties of LammeriteHide

Adamantine, Vitreous
Luster on cleavage surfaces is vitreous but on crystal faces adamantine
Dark green
Pale green
3½ - 4 on Mohs scale
good cleavage on {010},and poorer cleavage on {100}
and possibly {001}
5.18 g/cm3 (Measured)    

Optical Data of LammeriteHide

Biaxial (+)
RI values:
nα = 1.890 nβ = 1.900 nγ = 1.950
Measured: 54° (5)
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
r > v extreme
X = light blue, Y = sky blue, Z = bluish green

Chemical Properties of LammeriteHide


a solid solution is suggested basing on the data of Filatov et al. (1984), resulting in Cu3[(AsxP1-x)O4]2 (x=0.23-0.62)

Crystallography of LammeriteHide

Crystal System:
Cell Parameters:
a = 5.39 Å, b = 11.64 Å, c = 5.07 Å
β = 111.73°
a:b:c = 0.463 : 1 : 0.436
Unit Cell V:
295.49 ų (Calculated from Unit Cell)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001009LammeriteHawthorne F C (1986) Lammerite, Cu3(AsO4)2, a modulated close-packed structure American Mineralogist 71 206-20919860293
0012148LammeritePoulsen S J, Calvo C (1968) Crystal structure of Cu3(AsO4)2 Canadian Journal of Chemistry 46 917-9271968synthetic0293
0018801LammeriteStarova G L, Vergasova L P, Filatov S K, Britvin S N, Ananyev V V (2011) Lammerite-beta, Cu3(AsO4)2 - a new mineral from fumaroles of the Great Fissure Tolbachic eruption (Kamchatka, Russia) Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva 140 46-512011Second cinder cone, North Branch, Tolbach volcano, Kamchatka, Russia0293
CIF Raw Data - click here to close

Type Occurrence of LammeriteHide

General Appearance of Type Material:
Dark green spheroidal aggregates approx. 0.5 cm in diameter on corroded quartzose rock
Associated Minerals at Type Locality:
Keller, P., Paar, W.H., Dunn, P.J. (1981) Lammerit, Cu3[AsO4]2, ein neues Mineral von Laurani, Bolivien. Tschermaks Mineralogische und Petrographische Mitteilungen: 28: 157-164.

Synonyms of LammeriteHide

Other Language Names for LammeriteHide

Simplified Chinese:拉砷铜石
Traditional Chinese:拉砷銅石

Common AssociatesHide

Associated Minerals Based on Photo Data:
15 photos of Lammerite associated with LavendulanNaCaCu5(AsO4)4Cl · 5H2O
10 photos of Lammerite associated with LemanskiiteNaCaCu5(AsO4)4Cl · 3H2O
3 photos of Lammerite associated with StarovaiteKCu5O(VO4)3
2 photos of Lammerite associated with EuchlorineKNaCu3(SO4)3O
1 photo of Lammerite associated with QuartzSiO2
1 photo of Lammerite associated with KozyrevskiteCu4O(AsO4)2
1 photo of Lammerite associated with AnglesitePbSO4

Related Minerals - Nickel-Strunz GroupingHide

8.AB.BorisenkoiteCu3[(V,As)O4]2Mon. 2/m : P21/b
8.AB.05FarringtoniteMg3(PO4)2Mon. 2/m
8.AB.10Heterosite(Fe3+,Mn3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10LithiophiliteLiMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10NatrophiliteNaMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10PurpuriteMn3+(PO4)Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10TriphyliteLiFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10KarenwebberiteNaFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pnma
8.AB.15Sarcopside(Fe2+,Mn2+,Mg)3(PO4)2Mon. 2/m : P21/b
8.AB.15Chopinite(Mg,Fe2+)3(PO4)2Mon. 2/m : P21/b
8.AB.20BeusiteMn2+Mn2+2 (PO4)2Mon.
8.AB.20GraftoniteFe2+Fe2+2(PO4)2Mon. 2/m : P21/b
8.AB.25XanthiositeNi3(AsO4)2Mon. 2/m : P21/b
8.AB.30Lammerite-βCu3(AsO4)2Mon. 2/m : P21/b
8.AB.35McbirneyiteCu3(VO4)2Tric. 1 : P1
8.AB.35StranskiiteZn2Cu(AsO4)2Tric. 1 : P1
8.AB.35PseudolyonsiteCu3(VO4)2Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)HideβCu3(AsO4)2Mon. 2/m : P21/b 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.1.2OliveniteCu2(AsO4)(OH)Mon. 2/m : P21/m
20.1.3ClinoclaseCu3(AsO4)(OH)3Mon. 2/m : P21/b
20.1.4CornwalliteCu5(AsO4)2(OH)4Mon. 2/m : P21/b
20.1.5CornubiteCu5(AsO4)2(OH)4Tric. 1 : P1
20.1.6Chlorotile (of Frenzel)
20.1.7GeminiteCu2+(AsO3OH) · H2OTric.
20.1.8EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
20.1.9StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
20.1.10ArhbariteCu2Mg(AsO4)(OH)3Tric. 1 : P1
20.1.11LindackeriteCuCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
20.1.12ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.1.13LiroconiteCu2Al(AsO4)(OH)4 · 4H2OMon. 2/m
20.1.14CeruleiteCu2Al7(AsO4)4(OH)13 · 11.5H2OMon.
20.1.15ChenevixiteCu2Fe3+2(AsO4)2(OH)4Mon. 2/m : P21/m
20.1.16ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon.

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 LammeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Keller, P., Paar, W.H., Dunn, P.J. (1981) Lammerit, Cu3[AsO4]2, ein neues Mineral von Laurani, Bolivien. Tschermaks Mineralogische und Petrographische Mitteilungen: 28: 157-164.
Fleischer, M., Burns, R.G., Cabri, L.J., Francis, C.A., Pabst, A. (1982) New mineral names. American Mineralogist: 67: 413-418.
Filatov, S.K., Gaidamako, L.M., Glavatskikh, S.F., Starova, G.L., Sorokin, N.D. (1984) Exhalation lammerite Cu3[(As,P)O4]2,(Kamchatka). Doklady Akad. Nauk SSSR: 279: 197-200. (in Russian)
Hawthorne, F.C. (1986) Lammerite, Cu3(AsO4)2, a modulated close-packed structure. American Mineralogist: 71: 206-209.
Hawthorne, F.C., Dunn, P.J., Grice, J.D., Puziewicz, J., Shigley, J.E. (1986) New mineral names. American Mineralogist: 71: 845-847.
Starova, G.L., Vergasova, L.P., Filatov, S.K., Britvin, S.N., Ananyev, V.V. (2011) Lammerite-β, Cu3(AsO4)2- a new mineral from fumaroles of the Great Fissure Tolbachic eruption (Kamchatka, Russia). Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva: 140(5): 46-51.
Pekov, I.V., Koshlykova, N.N., Zubkova, N.V., Lykova, I.S., Britvin, S.N., Yapaskurt, V.O., Agakhanov, A.A., Shchipalkina, N.V., Turchkova, A.G., Sidorov, E.G. (2018) Fumarolic arsenates - a special type of arsenic mineralization. European Journal of Mineralogy: 30: 305-322.

Internet Links for LammeriteHide

Localities for LammeriteHide

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.
  • Tyrol
    • Kufstein District
      • Brixlegg
        • Geyer - Silberberg District
          • Silberberg
            • West slope ("Am Geyer")
Der Aufschluß (2006)
Bolivia (TL)
  • La Paz
    • Aroma Province
      • Laurani District
Keller, P., Paar, W.H., Dunn, P.J. (1981) Lammerit, Cu3[AsO4]2, ein neues Mineral von Laurani, Bolivien. Tschermaks Mineralogische und Petrographische Mitteilungen: 28: 157-164.; Paar, W.H., Cooper, M.A., Hawthorne, F.C., Moffatt, E., Gunter, M.E., Roberts, A.C., Dunn, P.J. (2009) Braithwaiteite, NaCu5 (TiSb) O2 (AsO4) 4 [AsO3 (OH)] 2 (H2O) 8, a new mineral species from Laurani, Bolivia. The Canadian Mineralogist: 47(4): 947-952.
  • Antofagasta
    • Antofagasta Province
      • Santa Catalina
        • Guanaco (Huanaco)
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
U. Kolitsch collection (SXRD analysed); IMA submission #037-99, Dr. F. Veselovsky, Czech Geol. Survey; Clissold, M. E. (2007) Aspects of the Supergene Geochemistry of Copper, Nickel and Bismuth. PhD Thesis University of Sydney, Australia 162pp.
  • North Rhine-Westphalia
    • Cologne
      • Aachen
        • Stolberg
Blaß, G. & Graf, H. W. (1995): Neufunde von Schlackenhalden in der nördlichen Eifel (II). Mineralien-Welt, 6 (3), 28-31.
  • Rajasthan
    • Jhunjhunu District
Ahmed, M., Shaif, M., Siddiquie, F. N., & Khan, R. (2018). Mode of Occurrence and Mineralogy of Northern Khetri Copper Deposits, Jhunjhunu District, Rajasthan. Natural Resources, 2018, 9, 389-403
  • Oshikoto Region
    • Tsumeb
Gebhard, G. (1999): Tsumeb II. A Unique Mineral Locality. GG Publishing, Grossenseifen, Germany
Ettler, V., Johan, Z., Kříbek, B., Šebek, O. & Mihaljevič, M. (2009): Mineralogy and environmental stability of slags from the Tsumeb smelter, Namibia. Applied Geochemistry 24, 1-15.
  • Kamchatka Krai
    • Tolbachik volcano
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Northern Breakthrough (North Breach)
Pavel M. Kartashov data.; Vergasova, L.P., Filatov, S.K., Semenova, T.F., and Anan'yev, V.V. (1990) Lenningradite, PbCU3(V04)2CI2, a new mineral from volcanic exhalations. Doklady Akademii Nauk SSSR: 310(6): 1434-1437.; Jambor, J.L. and Roberts, A.C. (2002) New mineral names. American Mineralogist: 87: 765-768.; Vergasova, L.P., Krivovichev, S.V., Britvin, S.N., Burns, P.C., and Ananiev, V.V. (2004) Filatovite, K[(Al,Zn)2(As,Si)2O8], a new mineral species from the Tolbachik volcano, Kamchatka peninsula, Russia. European Journal of Mineralogy: 16(3): 533-536.
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Yu. (2014): New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. II. Ericlaxmanite and kozyrevskite, two natural modifications of Cu4O(AsO4)2. Mineralogical Magazine, 78, 1553–1569.; Zubkova, N. V., Pekov, I. V., Ksenofontov, D. A., Yapaskurt, V. O., Pushcharovsky, D. Y., & Sidorov, E. G. (2018, March). Arcanite from Fumarole Exhalations of the Tolbachik Volcano (Kamchatka, Russia) and Its Crystal Structure. In Doklady Earth Sciences (Vol. 479, pp. 339-341). Pleiades Publishing.
Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012): Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy, 24, 749-757.; Pekov, I. V., Zelenski, M. E., Zubkova, N. V., Yapaskurt, V. O., Chukanov, N. V., Belakovskiy, D. I., & Pushcharovsky, D. Y. (2012). Calciolangbeinite, K2Ca2 (SO4) 3, a new mineral from the Tolbachik volcano, Kamchatka, Russia. Mineralogical Magazine, 76(3), 673-682.
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