Klajite
A valid IMA mineral species
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About Klajite
Sándor Klaj
Formula:
MnCu4(AsO4)2(HAsO4)2 · 9-10H2O
Colour:
Greenish yellow to yellowish green
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
3.213 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Named in 2011 by S. Szakáll, B. Fehér, S. Bigi, and F. Mádai for Sándor Klaj [b. 1948], a Hungarian miner and mineral collector.
Isostructural with:
Klajite forms irregular or sheaf-like aggregates up to 0.5 mm in diameter, which is made up of lath-like to thin tabular crystals, typically 0.05–0.2 mm in length. Twinning was not observed. The mineral is greenish yellow to yellowish green, translucent, with white streak and vitreous luster.
Compare monteneroite and dixenite.
Compare monteneroite and dixenite.
Unique Identifiers
Mindat ID:
32363
Long-form identifier:
mindat:1:1:32363:3
IMA Classification of Klajite
Approved
IMA Formula:
Mn2+Cu2+4(As5+O4)2(As5+O3OH)2·9H2O
Approval year:
2010
First published:
2011
Classification of Klajite
8.CE.30
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
39.2.7.5
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O
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 for Standard |
|---|---|---|
| Klj | 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 Klajite
Vitreous
Transparency:
Translucent
Colour:
Greenish yellow to yellowish green
Streak:
White
Hardness:
2 - 3 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Perfect
on {010}
on {010}
Fracture:
Irregular/Uneven
Density:
3.213 g/cm3 (Calculated)
Optical Data of Klajite
Type:
Biaxial
RI values:
nα = 1.595(30) nγ = 1.665(20)
Max. Birefringence:
δ = 0.070
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Pleochroism:
Weak
Comments:
Colourless to pale green.
Chemistry of Klajite
Mindat Formula:
MnCu4(AsO4)2(HAsO4)2 · 9-10H2O
Element Weights:
Crystallography of Klajite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 6.441(3) Å, b = 7.983(4) Å, c = 10.562(3) Å
α = 85.28(4)°, β = 80.63(5)°, γ = 84.80(4)°
α = 85.28(4)°, β = 80.63(5)°, γ = 84.80(4)°
Ratio:
a:b:c = 0.807 : 1 : 1.323
Unit Cell V:
532.4 ų
Z:
1
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0020070 | Klajite | Plasil J, Kasatkin A V, Skoda R, Skacha P (2014) Klajite, MnCu4(AsO4)2(AsO3OH)2(H2O)10, from Jachymov (Czech Republic): the second world occurrence Mineralogical Magazine 78 119-129 | 2014 | Sv. Trojice vein, Svornost mine, Jachymov, Czech Republic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.39 Å | (100) |
| 7.95 Å | (22) |
| 3.956 Å | (27) |
| 3.616 Å | (28) |
| 3.110 Å | (24) |
| 3.050 Å | (28) |
| 2.916 Å | (64) |
| 2.708 Å | (29) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Klajite
General Appearance of Type Material:
Irregular or sheaf-like aggregates up to 0.5 mm in diameter, which are made up of lath-like to thin tabular crystals, typically 0.05–0.2 mm in length.
Place of Conservation of Type Material:
Herman Ottó Museum, Miskolc, Hungary, cat. no. 2010.1, and the Hungarian Natural History Museum, Budapest, Hungary, specimen no. Gyn./1842.
Geological Setting of Type Material:
Secondary mineral in vugs of enargite ore.
Associated Minerals at Type Locality:
Synonyms of Klajite
Other Language Names for Klajite
Relationship of Klajite to other Species
Member of:
Other Members of Ondrušite Group:
| Chudobaite | Mg5(AsO4)2(AsO3OH)2 · 10H2O | Tric. 1 : P1 |
| Geigerite | Mn2+5(AsO4)2(HAsO4)2 · 10H2O | Tric. 1 : P1 |
| Ondrušite | CaCu4(AsO4)2(HAsO4)2 · 10H2O | Tric. 1 : P1 |
Related Minerals - Strunz-mindat Grouping
| 8.CE. | Monteneroite | Cu2+Mn2+2(AsO4)2 · 8H2O |
| 8.CE. | Belmonteite | CaMn2(AsO4)2 · 7H2O |
| 8.CE.X | Babánekite | Cu3(AsO4)2 · 8H2O |
| 8.CE.05 | Chudobaite | Mg5(AsO4)2(AsO3OH)2 · 10H2O |
| 8.CE.05 | Geigerite | Mn2+5(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.10 | Newberyite | Mg(PO3OH) · 3H2O |
| 8.CE.10 | Manganonewberyite | Mn(PO3OH)(H2O)3 |
| 8.CE.15 | Fanguangite | (MoO2)(PO3OH) · 4H2O |
| 8.CE.15 | Brassite | Mg(HAsO4) · 4H2O |
| 8.CE.20 | Phosphorrösslerite | Mg(PO3OH) · 7H2O |
| 8.CE.20 | Rösslerite | Mg(HAsO4) · 7H2O |
| 8.CE.25 | Switzerite | Mn2+3(PO4)2 · 7H2O |
| 8.CE.25 | Metaswitzerite | Mn2+3(PO4)2 · 4H2O |
| 8.CE.30 | Pradetite | CoCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Veselovskýite | ZnCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Lindackerite | CuCu4(AsO4)2(HAsO4)2 · 9H2O |
| 8.CE.30 | Hloušekite | (Ni,Co)Cu4(AsO4)2(AsO3OH)2 · 9H2O |
| 8.CE.30 | Ondrušite | CaCu4(AsO4)2(HAsO4)2 · 10H2O |
| 8.CE.35 | Bobierrite | Mg3(PO4)2 · 8H2O |
| 8.CE.40 | Barićite | (Mg,Fe)3(PO4)2 · 8H2O |
| 8.CE.40 | Parasymplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Gritsenkoite | CoMg2(AsO4)2(H2O)8 |
| 8.CE.40 | Cabrerite | NiMg2(AsO4)2 · 8H2O |
| 8.CE.40 | Pakhomovskyite | Co3(PO4)2 · 8H2O |
| 8.CE.40 | Vivianite | Fe2+Fe2+2(PO4)2 · 8H2O |
| 8.CE.40 | Arupite | Ni3(PO4)2 · 8H2O |
| 8.CE.40 | Erythrite | Co3(AsO4)2 · 8H2O |
| 8.CE.40 | Hörnesite | Mg3(AsO4)2 · 8H2O |
| 8.CE.40 | Manganohörnesite | Mn2+3(AsO4)2 · 8H2O |
| 8.CE.40 | Köttigite | Zn3(AsO4)2 · 8H2O |
| 8.CE.40 | Ferrisymplesite | Fe3+3(AsO4)2(OH)3 · 5H2O |
| 8.CE.40 | Annabergite | Ni3(AsO4)2 · 8H2O |
| 8.CE.45 | Symplesite | Fe2+3(AsO4)2 · 8H2O |
| 8.CE.50 | Cattiite | Mg3(PO4)2 · 22H2O |
| 8.CE.55 | Koninckite | Fe3+PO4 · 3H2O |
| 8.CE.60 | Kaňkite | FeAsO4 · 3.5H2O |
| 8.CE.60 | Hilarionite | Fe3+2(SO4)(AsO4)(OH) · 6H2O |
| 8.CE.65 | Steigerite | Al(VO4) · 3H2O |
| 8.CE.70 | Metaschoderite | Al2(PO4)(VO4) · 6H2O |
| 8.CE.70 | Schoderite | Al2(PO4)(VO4) · 8H2O |
| 8.CE.75 | Zigrasite | MgZr(PO4)2 · 4H2O |
| 8.CE.75 | 'UM2009-11-PO:CaHZr' | CaZr[PO4]2 · 4H2O |
| 8.CE.75 | Malhmoodite | FeZr(PO4)2 · 4H2O |
| 8.CE.80 | Santabarbaraite | Fe3+3(PO4)2(OH)3 · 5H2O |
| 8.CE.85 | Metaköttigite | (Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH) |
| 8.CE.90 | Slavkovite | Cu13(AsO4)6(AsO3OH)4 · 23H2O |
Fluorescence of Klajite
Non-fluorescent.
Other Information
Notes:
Insoluble in water.
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 Klajite
mindat.org URL:
https://www.mindat.org/min-32363.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Klajite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. (2010) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 2. Mineralogical Magazine, 74 (2) 375-377 doi:10.1180/s0026461x00056036
Szakáll, Sandor, Fehér, Béla, Bigi, Simona, Mádai, Ferenc (2011) Klajite from Recsk (Hungary), the first Mn-Cu arsenate mineral. European Journal of Mineralogy, 23 (5) 829-835 doi:10.1127/0935-1221/2011/0023-2143
Localities for Klajite
Showing 2 localities.
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Czech Republic | |
| Plášil et al. (2014) |
Hungary (TL) | |
| Williams et al. (2010) +1 other reference |
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RM-48 adit, Recsk, Pétervására District, Heves County, Hungary