Ericlaxmanite
A valid IMA mineral species
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About Ericlaxmanite
Formula:
Cu4O(AsO4)2
Colour:
Green to dark green
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
5.036 (Calculated)
Crystal System:
Triclinic
Name:
Named in honour of the Russian mineralogist, geologist, geographer, biologist and chemist Erik Gustavovich Laxmann (July 27, 1737 – January 6, 1796).
Type Locality:
Dimorph of:
This page provides mineralogical data about Ericlaxmanite.
Unique Identifiers
Mindat ID:
43886
Long-form identifier:
mindat:1:1:43886:5
GUID
(UUID V4):
(UUID V4):
3b7bc954-1f01-4c2f-bb2b-e2889d56b72b
IMA Classification of Ericlaxmanite
Classification of Ericlaxmanite
8.BB.52a
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Elx | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ericlaxmanite
Vitreous
Transparency:
Transparent
Colour:
Green to dark green
Streak:
Light green
Hardness:
3½ on Mohs scale
Comment:
~3½
Tenacity:
Brittle
Cleavage:
Distinct/Good
One direction of distinct cleavage (observed under the microscope).
One direction of distinct cleavage (observed under the microscope).
Fracture:
Irregular/Uneven
Density:
5.036 g/cm3 (Calculated)
Optical Data of Ericlaxmanite
Type:
Biaxial (-)
RI values:
nα = 1.870(10) nβ = 1.900(10) nγ = 1.915(10)
2V:
Measured: 60° (15), Calculated: 70°
Max Birefringence:
δ = 0.045
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v, weak
Pleochroism:
Strong
Comments:
X = very pale green; Y = green, with medium saturation of colour; Z = bright green.
Comments:
Absorption: Z > Y > X.
Chemistry of Ericlaxmanite
Mindat Formula:
Cu4O(AsO4)2
Elements listed:
Crystallography of Ericlaxmanite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.4271(4) Å, b = 7.6585(4) Å, c = 8.2249(3) Å
α = 98.396(4)°, β = 112.420(5)°, γ = 98.397(5)°
α = 98.396(4)°, β = 112.420(5)°, γ = 98.397(5)°
Ratio:
a:b:c = 0.839 : 1 : 1.074
Unit Cell V:
361.11 ų
Z:
2
Morphology:
Tabular, lamellar, equant or short prismatic crystals up to 0.1 mm in size.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0019952 | Ericlaxmanite | Staack M, Mueller Buschbaum H (1996) Zur Kenntnis des Kupfer-Oxid-Arsenats Cu4O(AsO4)2 Zeitschrift fur Naturforschung B51 1279-1282 | 1996 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.868 Å | (46) |
3.685 Å | (100) |
3.063 Å | (71) |
2.957 Å | (58) |
2.777 Å | (98) |
2.698 Å | (46) |
2.449 Å | (37) |
2.201 Å | (51) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
45a : [Sulfates, arsenates, selenates, antimonates] |
Type Occurrence of Ericlaxmanite
General Appearance of Type Material:
Clusters of tabular, lamellar, equant or short prismatic crystals up to 0.1 mm; pseudomorphs after urusovite crystal crusts up to 1.5×2 cm in area.
Place of Conservation of Type Material:
Type material is deposited in the collections of the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4387/1.
Geological Setting of Type Material:
Fumarole. The temperature measured at the collecting site was 360-380ºC.
Associated Minerals at Type Locality:
Synonyms of Ericlaxmanite
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Ericlaxmanite associated with Lammerite | Cu3(AsO4)2 |
2 photos of Ericlaxmanite associated with Kozyrevskite | Cu4O(AsO4)2 |
2 photos of Ericlaxmanite associated with Paralammerite | Cu3(AsO4)2 |
2 photos of Ericlaxmanite associated with Tenorite | CuO |
2 photos of Ericlaxmanite associated with Orthoclase | K(AlSi3O8) |
1 photo of Ericlaxmanite associated with Aphthitalite | (K,Na)3Na(SO4)2 |
1 photo of Ericlaxmanite associated with Langbeinite | K2Mg2(SO4)3 |
1 photo of Ericlaxmanite associated with Popovite | Cu5O2(AsO4)2 |
Related Minerals - Strunz-mindat Grouping
8.BB. | Tilasite | CaMg(AsO4)F |
8.BB.X | Arsenowagnerite | Mg2(AsO4)F |
8.BB. | Moabite | NiFe3+(PO4)O |
8.BB. | Karlditmarite | Cu9O4(PO4)2(SO4)2 |
8.BB. | Milkovoite | Cu4O(PO4)(AsO4) |
8.BB. | Paulgrothite | Cu9Fe3+O4(PO4)4Cl3 |
8.BB.05 | Amblygonite | LiAl(PO4)F |
8.BB.05 | Montebrasite | LiAl(PO4)(OH) |
8.BB.05 | Tavorite | LiFe3+(PO4)(OH) |
8.BB.10 | Triplite | Mn2+2(PO4)F |
8.BB.10 | Zwieselite | Fe2+2(PO4)F |
8.BB.15 | Sarkinite | Mn2+2(AsO4)(OH) |
8.BB.15 | Triploidite | Mn2+2(PO4)(OH) |
8.BB.15 | Wagnerite | (Mg,Fe2+)2(PO4)F |
8.BB.15 | Wolfeite | Fe2+2(PO4)(OH) |
8.BB.15 | Stanĕkite | (Mn2+,Fe2+,Mg)Fe3+(PO4)O |
8.BB.15 | Joosteite | Mn2+(Mn3+,Fe3+)(PO4)O |
8.BB.15 | Hydroxylwagnerite | Mg2(PO4)(OH) |
8.BB.15 | Unnamed (Sb-analogue of Auriacusite) | Fe3+Cu2+[(Sb,As)O4]O |
8.BB.20 | Holtedahlite | Mg2(PO4)(OH) |
8.BB.20 | Satterlyite | (Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6 |
8.BB.25 | Althausite | Mg4(PO4)2(OH,O)(F,◻) |
8.BB.30 | Adamite | Zn2(AsO4)(OH) |
8.BB.30 | Eveite | Mn2+2(AsO4)(OH) |
8.BB.30 | Libethenite | Cu2(PO4)(OH) |
8.BB.30 | Olivenite | Cu2(AsO4)(OH) |
8.BB.30 | Zincolibethenite | CuZn(PO4)(OH) |
8.BB.30 | Zincolivenite | CuZn(AsO4)(OH) |
8.BB.30 | Auriacusite | Fe3+Cu2+(AsO4)O |
8.BB.35 | Paradamite | Zn2(AsO4)(OH) |
8.BB.35 | Tarbuttite | Zn2(PO4)(OH) |
8.BB.40 | Barbosalite | Fe2+Fe3+2(PO4)2(OH)2 |
8.BB.40 | Hentschelite | CuFe3+2(PO4)2(OH)2 |
8.BB.40 | Lazulite | MgAl2(PO4)2(OH)2 |
8.BB.40 | Scorzalite | Fe2+Al2(PO4)2(OH)2 |
8.BB.40 | Wilhelmkleinite | ZnFe3+2(AsO4)2(OH)2 |
8.BB.45 | Trolleite | Al4(PO4)3(OH)3 |
8.BB.45 | Yaroshevskite | Cu9O2(VO4)4Cl2 |
8.BB.45 | Dokuchaevite | Cu8O2(VO4)3Cl3 |
8.BB.50 | Namibite | Cu(BiO)2(VO4)(OH) |
8.BB.50 | Aleutite | [Cu5O2](AsO4)(VO4) · (Cu,K,Pb,Rb,Cs,)Cl |
8.BB.52b | Kozyrevskite | Cu4O(AsO4)2 |
8.BB.55 | Phosphoellenbergerite | (Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6 |
8.BB.55 | Popovite | Cu5O2(AsO4)2 |
8.BB.60 | Urusovite | CuAl(AsO4)O |
8.BB.65 | Theoparacelsite | Cu3(As2O7)(OH)2 |
8.BB.70 | Turanite | Cu5(VO4)2(OH)4 |
8.BB.75 | Stoiberite | Cu5(VO4)2O2 |
8.BB.80 | Fingerite | Cu11(VO4)6O2 |
8.BB.85 | Averievite | Cu6(VO4)2O2Cl2 |
8.BB.90 | Lipscombite | Fe2+Fe3+2(PO4)2(OH)2 |
8.BB.90 | Richellite | CaFe3+2(PO4)2(OH,F)2 |
8.BB.90 | Zinclipscombite | ZnFe3+2(PO4)2(OH)2 |
Other Information
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 Ericlaxmanite
mindat.org URL:
https://www.mindat.org/min-43886.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
References for Ericlaxmanite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01
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 (7) 1553-1569 doi:10.1180/minmag.2014.078.7.03
Localities for Ericlaxmanite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Williams et al. (2013) +1 other reference |
Quick NavTopAbout EriclaxmaniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia