Niedermayrite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Niedermayrite
Dr. Gerhard Niedermayr in the field
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
IMA Classification of Niedermayrite
Approved
IMA Formula:
Cu2+4Cd2+(S6+O4)2(OH)6(H2O)4
Approval year:
1997
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 for Standard |
|---|---|---|
| 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 = 0.042 - 0.062
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:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v strong
Optical Extinction:
X = b.
Pleochroism:
Non-pleochroic
Chemistry of Niedermayrite
Mindat Formula:
CdCu4(SO4)2(OH)6 · 4H2O
Element Weights:
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
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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:
Synonyms of Niedermayrite
Other Language Names for Niedermayrite
Relationship of Niedermayrite to other Species
Structurally related to group(s):
Common Associates
Associations 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 Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| 2 photos of Niedermayrite associated with Gypsum | CaSO4 · 2H2O |
| 2 photos of Niedermayrite associated with Aldridgeite | (Cd2+,Ca)(Cu2+,Zn2+)4(S6+O4)2(OH)6 · 3H2O |
| 2 photos of Niedermayrite associated with Conichalcite | CaCu(AsO4)(OH) |
| 2 photos of Niedermayrite associated with Smithsonite | ZnCO3 |
| 2 photos of Niedermayrite associated with Drobecite | CdSO4 · 4H2O |
| 2 photos of Niedermayrite associated with Antlerite | Cu3(SO4)(OH)4 |
| 1 photo of Niedermayrite associated with Gallobeudantite | PbGa3(AsO4)(SO4)(OH)6 |
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 | Fehrite | MgCu4(SO4)2(OH)6 · 6H2O |
| 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.15 | Kobyashevite | Cu5(SO4)2(OH)6 · 4H2O |
| 7.DD.15 | Spangolite | Cu6Al(SO4)(OH)12Cl · 3H2O |
| 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 | Edwardsite | Cu3Cd2(SO4)2(OH)6 · 4H2O |
| 7.DD.30 | Serpierite | Ca(Cu2+,Zn2+)4(S6+O4)2(OH)6 · 3H2O |
| 7.DD.30 | Campigliaite | Mn2+Cu4(SO4)2(OH)6 · 4H2O |
| 7.DD.30 | Orthoserpierite | Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
| 7.DD.30 | Devilline | CaCu4(SO4)2(OH)6 · 3H2O |
| 7.DD.35 | Shigaite | Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DD.35 | Zincaluminite | (Zn1-xAlx)(SO4)x/2(OH)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 | Hydrowoodwardite | (Cu1-xAlx)(OH)2[SO4]x/2 · nH2O |
| 7.DD.35 | Honessite | (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O |
| 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 | Wermlandite | Mg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2O |
| 7.DD.35 | Nikischerite | Fe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DD.35 | Hydrohonessite | (Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O |
| 7.DD.35 | Woodwardite | Cu1-xAlx(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.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.40 | Isselite | Cu6(SO4)(OH)10(H2O)4 · H2O |
| 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 | Nickelalumite | NiAl4(SO4)(OH)12(H2O)3 |
| 7.DD.75 | Kyrgyzstanite | ZnAl4(SO4)(OH)12 · 3H2O |
| 7.DD.75 | Chalcoalumite | CuAl4(SO4)(OH)12 · 3H2O |
| 7.DD.80 | Schulenbergite | (Cu,Zn)7(SO4)2(OH)10 · 3H2O |
| 7.DD.80 | 'UM1992-30-SO:CCuHZn' | (Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2O |
| 7.DD.80 | Thérèsemagnanite | NaCo4(SO4)(OH)6Cl · 6H2O |
| 7.DD.80 | Guarinoite | Zn6(SO4)(OH)10 · 5H2O |
| 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
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Niedermayrite
Reference List:
Giester, G., Rieck, B., Brandstätter, F. (1998) Niedermayrite, Cu4Cd(SO4)2(OH)6·4H2O, a new mineral from the Lavrion Mining District, Greece. Mineralogy and Petrology, 63 (1) 19-34 doi:10.1007/bf01162766
Localities for Niedermayrite
Showing 13 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.
Australia | |
| Peter Elliot pers comm |
Bolivia | |
| EDS analysis by Joy Desor |
| Joy Desor specimen. EDS analyzed. |
| Biagioni et al. (2022) |
Greece | |
| Rieck (n.d.) |
| Schreiber et al. (2003) |
| Gröbner (2003) | |
| Giester et al. (1998) +3 other references |
| Rieck (n.d.) |
Namibia | |
| EDS and Raman analyzed by Joy Desor. |
Portugal | |
| Alves (n.d.) |
USA | |
| Patrick Haynes collection +1 other reference |
| Rocks & Minerals 83:1 pp 52-62 +1 other reference |
Quick NavTopAbout NiedermayriteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Esperanza Mine, Kaminiza mines, Km 3, Lavreotiki, East Attica, Attica, Greece