Niedermayrite
A valid IMA mineral species
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About Niedermayrite
Formula:
CdCu4(SO4)2(OH)6 · 4H2O
Colour:
Bluish green, pale bluish
Lustre:
Vitreous
Specific Gravity:
3.292 (Calculated)
Crystal System:
Monoclinic
Name:
Named after Dr. Gerhard Niedermayr (16 June 1941 - 17 July 2015), mineralogist and geologist, Naturhistorisches Museum, Vienna, Austria, compiler of the regional mineralogy of the eastern Alps. Known for his extensive work on Alpine-type minerals, the mineralogy of Carinthia, quartz, and gemstones.
Unique Identifiers
Mindat ID:
7192
Long-form identifier:
mindat:1:1:7192:1
GUID
(UUID V4):
(UUID V4):
7490deb5-a1cd-499a-9186-082e89461a71
IMA Classification of Niedermayrite
Approved
IMA Formula:
Cu4Cd(SO4)2(OH)6 · 4H2O
First published:
1998
Classification of Niedermayrite
7.DD.30
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra
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 |
---|---|---|
Ndm | 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 Niedermayrite
Vitreous
Colour:
Bluish green, pale bluish
Streak:
White
Hardness Data:
Could not be measured
Tenacity:
Brittle
Cleavage:
Perfect
on {010}
on {010}
Density:
3.292 g/cm3 (Calculated)
Optical Data of Niedermayrite
Type:
Biaxial (-)
RI values:
nα = 1.599 - 1.619 nβ = 1.642 nγ = 1.661
2V:
Measured: 84° , Calculated: 64° to 82°
Max Birefringence:
δ = 0.062
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:
Moderate
Dispersion:
r > v strong
Optical Extinction:
X = b.
Pleochroism:
Non-pleochroic
Chemistry of Niedermayrite
Mindat Formula:
CdCu4(SO4)2(OH)6 · 4H2O
Crystallography of Niedermayrite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 5.543(1) Å, b = 21.995(4) Å, c = 6.079(1) Å
β = 92.04(3)°
β = 92.04(3)°
Ratio:
a:b:c = 0.252 : 1 : 0.276
Unit Cell V:
740.7 ų
Z:
2
Morphology:
The predominant crystal form is {010}, additional forms are {100}, {001} as well as unindexed prisms.
Twinning:
No clear twinning was observed.
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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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) |
---|---|---|---|---|---|---|---|
0014641 | Niedermayrite | Giester G, Rieck B, Brandstatter F (1998) Niedermayrite, Cu4Cd(SO4)2(OH)6*4H2O, a new mineral from the Lavrion Mining District, Greece Mineralogy and Petrology 63 19-34 | 1998 | Lavrion mining district, Attica peninsula, Greece | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
11.02 Å | (90) |
5.874 Å | (20) |
5.496 Å | (100) |
5.322 Å | (25) |
4.079 Å | (50) |
3.660 Å | (20) |
3.437 Å | (30) |
3.243 Å | (40) |
2.470 Å | (30) |
2.425 Å | (20) |
2.205 Å | (20) |
1.897 Å | (20) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] |
Type Occurrence of Niedermayrite
General Appearance of Type Material:
Tiny euhedral plates, commonly intergrown as green crusts up to several cm2 in size.
Place of Conservation of Type Material:
Institute of Mineralogy and Crystallography, University of Vienna, Vienna and Department of Mineralogy and Petrography, Natural History Museum, Vienna, Austria.
Associated Minerals at Type Locality:
Reference:
Giester, G., Rieck, B., and Brandstätter, F. (1998) Niedermayrite, Cu4Cd(SO4)2(OH)6•4H2O, a new mineral from the Lavrion Mining District, Greece. Mineralogy and Petrology: 63: 19-34.
Synonyms of Niedermayrite
Other Language Names for Niedermayrite
Relationship of Niedermayrite to other Species
Structurally related to group(s):
Common Associates
Associated Minerals Based on Photo Data:
10 photos of Niedermayrite associated with Ktenasite | ZnCu4(SO4)2(OH)6 · 6H2O |
5 photos of Niedermayrite associated with Brochantite | Cu4(SO4)(OH)6 |
2 photos of Niedermayrite associated with Antlerite | Cu3(SO4)(OH)4 |
2 photos of Niedermayrite associated with Drobecite | CdSO4 · 4H2O |
2 photos of Niedermayrite associated with Gypsum | CaSO4 · 2H2O |
2 photos of Niedermayrite associated with Conichalcite | CaCu(AsO4)(OH) |
2 photos of Niedermayrite associated with Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
1 photo of Niedermayrite associated with Calcite | CaCO3 |
1 photo of Niedermayrite associated with Chalcanthite | CuSO4 · 5H2O |
1 photo of Niedermayrite associated with Keyite | Cu2+3Zn4Cd2(AsO4)6 · 2H2O |
Related Minerals - Strunz-mindat Grouping
7.DD. | Asagiite | NiCu4(SO4)2(OH)6 · 6H2O |
7.DD.05 | Felsőbányaite | Al4(SO4)(OH)10 · 4H2O |
7.DD.07 | Llantenesite | Cu6Al[SeO4](OH)12Cl · 3H2O |
7.DD.10 | Langite | Cu4(SO4)(OH)6 · 2H2O |
7.DD.10 | Posnjakite | Cu4(SO4)(OH)6 · H2O |
7.DD.10 | Wroewolfeite | Cu4(SO4)(OH)6 · 2H2O |
7.DD.10 | Gobelinite | CoCu4(SO4)2(OH)6 · 6H2O |
7.DD.10 | Fehrite | MgCu4(SO4)2(OH)6 · 6H2O |
7.DD.15 | Spangolite | Cu6Al(SO4)(OH)12Cl · 3H2O |
7.DD.15 | Kobyashevite | Cu5(SO4)2(OH)6 · 4H2O |
7.DD.15 | Unnamed (Dimorph of Devilline) | CaCu4(SO4)2(OH)6 · 3H2O |
7.DD.20 | Ktenasite | ZnCu4(SO4)2(OH)6 · 6H2O |
7.DD.25 | Christelite | Cu2Zn3(SO4)2(OH)6 · 4H2O |
7.DD.30 | Campigliaite | Mn2+Cu4(SO4)2(OH)6 · 4H2O |
7.DD.30 | Devilline | CaCu4(SO4)2(OH)6 · 3H2O |
7.DD.30 | Orthoserpierite | Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
7.DD.30 | Serpierite | Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
7.DD.30 | Edwardsite | Cu3Cd2(SO4)2(OH)6 · 4H2O |
7.DD.35 | Carrboydite | (Ni1-xAlx)(SO4)x/2(OH)2 · nH2O |
7.DD.35 | Glaucocerinite | (Zn1-xAlx)(OH)2(SO4)x/2 · nH2O |
7.DD.35 | Honessite | (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O |
7.DD.35 | Hydrohonessite | (Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O |
7.DD.35 | Motukoreaite | Mg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2O |
7.DD.35 | Mountkeithite | [(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2O |
7.DD.35 | Shigaite | Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DD.35 | Wermlandite | Mg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2O |
7.DD.35 | Woodwardite | Cu1-xAlx(OH)2(SO4)x/2 · nH2O |
7.DD.35 | Zincaluminite | Zn6Al6(SO4)2(OH)16 · 5H2O |
7.DD.35 | Hydrowoodwardite | (Cu1-xAlx)(OH)2[SO4]x/2 · nH2O |
7.DD.35 | Zincowoodwardite | Zn1-xAlx(OH)2[SO4]x/2 · nH2O |
7.DD.35 | Natroglaucocerinite | Zn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DD.35 | Nikischerite | Fe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DD.40 | Isselite | Cu6(SO4)(OH)10 · 5H2O |
7.DD.40 | Lawsonbauerite | (Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2O |
7.DD.40 | Torreyite | (Mg,Mn2+)7◻2Mn2+2Zn4(SO4)2(OH)22 · 8H2O |
7.DD.45 | Mooreite | Mg9◻2Mn2Zn4(SO4)2(OH)26 · 8H2O |
7.DD.45 | Hodgesmithite | (Cu,Zn)6Zn(SO4)2(OH)10 · 3H2O |
7.DD.47 | Lahnsteinite | Zn4(SO4)(OH)6 · 3H2O |
7.DD.50 | Namuwite | Zn4(SO4)(OH)6 · 4H2O |
7.DD.50 | Minohlite | (Cu,Zn)7(SO4)2(OH)10 · 8H2O |
7.DD.52 | Lauraniite | Cu6Cd2(SO4)2(OH)12 · 5H2O |
7.DD.55 | Bechererite | Zn7Cu(OH)13[(SiO(OH)3(SO4)] |
7.DD.60 | Ramsbeckite | (Cu,Zn)15(SO4)4(OH)22 · 6H2O |
7.DD.65 | Vonbezingite | Ca6Cu3(SO4)3(OH)12 · 2H2O |
7.DD.70 | Redgillite | Cu6(SO4)(OH)10 · H2O |
7.DD.75 | Chalcoalumite | CuAl4(SO4)(OH)12 · 3H2O |
7.DD.75 | Nickelalumite | NiAl4(SO4)(OH)12(H2O)3 |
7.DD.75 | Kyrgyzstanite | ZnAl4(SO4)(OH)12 · 3H2O |
7.DD.80 | Guarinoite | Zn6(SO4)(OH)10 · 5H2O |
7.DD.80 | Schulenbergite | (Cu,Zn)7(SO4)2(OH)10 · 3H2O |
7.DD.80 | Thérèsemagnanite | NaCo4(SO4)(OH)6Cl · 6H2O |
7.DD.80 | UM1992-30-SO:CCuHZn | (Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2O |
7.DD.85 | Montetrisaite | Cu6(SO4)(OH)10 · 2H2O |
Fluorescence of Niedermayrite
Non-fluorescent.
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 Niedermayrite
mindat.org URL:
https://www.mindat.org/min-7192.html
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References for Niedermayrite
Localities for Niedermayrite
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.
Australia | |
| Peter Elliot pers. comm. |
Bolivia | |
| EDS analysis by Joy Desor |
Joy Desor specimen. EDS analyzed. | |
| Biagioni et al. (2022) |
Greece | |
| Branko Rieck collection |
| Lapis (May 2003) |
Gröbner (2003) | |
| Giester et al. (1998) +3 other references |
| Branko Rieck collection |
Namibia | |
| EDS and Raman analyzed by Joy Desor. |
Portugal | |
| Pedro Alves collection and analytical ... |
USA | |
| Patrick Haynes collection +1 other reference |
| Rocks & Minerals 83:1 pp 52-62 +1 other reference |
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Esperanza Mine, Kaminiza mines, Km 3, Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece