Koritnigite
A valid IMA mineral species
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About Koritnigite
Formula:
Zn(AsO3OH) · H2O
Colour:
Colorless to white
Lustre:
Vitreous, Sub-Vitreous
Hardness:
2
Specific Gravity:
3.54
Crystal System:
Triclinic
Member of:
Name:
Named by P. Keller, P. Suesse, G. Schnorrer, and P. Dunn, in honor of Professor Sigmund Koritnig (December 12, 1912, Graz, Austria – March 26, 1994, Göttingen, Germany), petrologist, University of Göttingen, Göttingen, Germany.
Isostructural with:
Unique Identifiers
Mindat ID:
2252
Long-form identifier:
mindat:1:1:2252:7
IMA Classification of Koritnigite
Classification of Koritnigite
8.CB.20
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
39.1.4.1
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
20.3.3
20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg
20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg
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 |
|---|---|---|
| Kor | 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 Koritnigite
Vitreous, Sub-Vitreous
Transparency:
Transparent
Colour:
Colorless to white
Streak:
White
Hardness:
2 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
{010} perfect; shows traces || [001] and [100]
{010} perfect; shows traces || [001] and [100]
Density:
3.54 g/cm3 (Measured) 3.56 g/cm3 (Calculated)
Optical Data of Koritnigite
Type:
Biaxial (+)
RI values:
nα = 1.632 nβ = 1.652 nγ = 1.693
2V:
Measured: 70° , Calculated: 72°
Birefringence:
0.061
Max. Birefringence:
δ = 0.061
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:
Very 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:
weak to distinct
Optical Extinction:
Z ∧ c = 22°; X = b.
Pleochroism:
Non-pleochroic
Chemistry of Koritnigite
Mindat Formula:
Zn(AsO3OH) · H2O
Element Weights:
Elements listed:
Crystallography of Koritnigite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.948 Å, b = 15.829 Å, c = 6.668 Å
α = 90.86°, β = 96.56°, γ = 90.05°
α = 90.86°, β = 96.56°, γ = 90.05°
Ratio:
a:b:c = 0.502 : 1 : 0.421
Unit Cell V:
833.30 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Wide bladed to acicular.
Comment:
Neues Jahrbuch MA 138:316 (1980) structure.
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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CIF File Best | x | y | z | a | b | c
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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) |
|---|---|---|---|---|---|---|---|
| 0014711 | Koritnigite | Keller P, Hess H, Riffel H (1980) Die kristallstruktur von koritnigit, Zn[H2O|HOAsO3] Neues Jahrbuch fur Mineralogie, Abhandlungen 138 316-332 | 1980 | Tsumeb, Namibia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.9 Å | (100) |
| 3.95 Å | (40) |
| 3.83 Å | (70) |
| 3.16 Å | (90) |
| 2.93 Å | (40) |
| 2.68 Å | (40) |
| 2.46 Å | (60) |
| 2.19 Å | (50) |
Comments:
ICDD 34-1396
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] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Koritnigite
General Appearance of Type Material:
No euhedral crystals.
Place of Conservation of Type Material:
Institut für Mineralogie und Kristallchemie, Universität Stuttgart, Stuttgart, Germany, number NM 02 (cotype).
National Museum of Natural History, Washington, D.C., USA, number 143369 (cotype).
Archiv der Universität Stuttgart, Stuttgart, Germany, number TM-78.78-8701.13 (part of holotype).
Mineralogische Sammlungen, Mineralogisch-Petrographisches Institut, Universität Göttingen, Göttingen, Germany, number 7.3.53.1+2 (part of holotype).
National Museum of Natural History, Washington, D.C., USA, number 143369 (cotype).
Archiv der Universität Stuttgart, Stuttgart, Germany, number TM-78.78-8701.13 (part of holotype).
Mineralogische Sammlungen, Mineralogisch-Petrographisches Institut, Universität Göttingen, Göttingen, Germany, number 7.3.53.1+2 (part of holotype).
Geological Setting of Type Material:
Oxidized zone of a polymetallic ore body.
Associated Minerals at Type Locality:
Synonyms of Koritnigite
Other Language Names for Koritnigite
Relationship of Koritnigite to other Species
Member of:
Other Members of Koritnigite Group:
| Cobaltkoritnigite | Co(AsO3OH) · H2O | Tric. 1 : P1 |
| Magnesiokoritnigite | Mg(AsO3OH) · H2O | Tric. 1 : P1 |
Common Associates
Associations Based on Photo Data:
| 3 photos of Koritnigite associated with Cobaltkoritnigite | Co(AsO3OH) · H2O |
| 2 photos of Koritnigite associated with Retgersite | NiSO4 · 6H2O |
| 1 photo of Koritnigite associated with Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O |
| 1 photo of Koritnigite associated with Warikahnite | Zn3(AsO4)2 · 2H2O |
| 1 photo of Koritnigite associated with Anglesite | PbSO4 |
| 1 photo of Koritnigite associated with Mahnertite | NaCu3(AsO4)2Cl · 5H2O |
| 1 photo of Koritnigite associated with Juansilvaite | Na5Al3[AsO3(OH)]4[AsO2(OH)2]2(SO4)2 · 4H2O |
| 1 photo of Koritnigite associated with Proustite | Ag3AsS3 |
| 1 photo of Koritnigite associated with Galena | PbS |
| 1 photo of Koritnigite associated with Sphalerite | ZnS |
Related Minerals - Strunz-mindat Grouping
| 8.CB. | Krupičkaite | Cu6[AsO3(OH)]6 · 8H2O |
| 8.CB.X | Honzaite | Ni2(AsO3OH)2 · 5H2O |
| 8.CB.X | Redondite | AlPO4 · 2H2O |
| 8.CB.05 | Ermeloite | Al(PO4) · H2O |
| 8.CB.05 | Serrabrancaite | MnPO4 · H2O |
| 8.CB.10 | Nyholmite | Cd3Zn2(AsO3OH)2(AsO4)2 · 4H2O |
| 8.CB.10 | Villyaellenite | (Mn,Ca)Mn2Ca2(AsO3OH)2(AsO4)2 · 4H2O |
| 8.CB.10 | Giftgrubeite | CaMn2Ca2(AsO4)2(AsO3OH)2 · 4H2O |
| 8.CB.10 | Hureaulite | Mn2+5(PO3OH)2(PO4)2 · 4H2O |
| 8.CB.10 | Miguelromeroite | Mn2+5(AsO3OH)2(AsO4)2(H2O)4 |
| 8.CB.10 | 'UM1997-09-AsO:CaHMgZn' | (Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O |
| 8.CB.15 | Krautite | Mn(HAsO4) · H2O |
| 8.CB.20 | Cobaltkoritnigite | Co(AsO3OH) · H2O |
| 8.CB.20 | Magnesiokoritnigite | Mg(AsO3OH) · H2O |
| 8.CB.25 | Yvonite | Cu(HAsO4) · 2H2O |
| 8.CB.30 | Geminite | Cu2+(AsO3OH) · H2O |
| 8.CB.35 | Schubnelite | Fe3+VO4 · H2O |
| 8.CB.40 | Radovanite | Cu2Fe3+(AsO4)(HAs3+O3)2 · H2O |
| 8.CB.45 | Kazakhstanite | Fe3+5V4+3V5+12O39(OH)9 · 9H2O |
| 8.CB.50 | Kolovratite | NixZny(VO4)0.67(x+y) · nH2O |
| 8.CB.60 | Burgessite | Co2(H2O)4[AsO3(OH)]2(H2O) |
| 8.CB.65 | Cardite | Zn5.5(AsO4)2(AsO3OH)(OH)3 · 3H2O |
Fluorescence of Koritnigite
Not fluorescent.
Other Information
Notes:
Soluble in cold dilute HCl and HNO3.
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 Koritnigite
mindat.org URL:
https://www.mindat.org/min-2252.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Koritnigite
Reference List:
Fleischer, M.; Mandarino, J.A.; Pabst, A. (1980) New mineral names. American Mineralogist, 65 (1-2). 205-210
Frost, Ray L., López, Andrés, Xi, Yunfei, Lana, Cristiano, Souza, Larissa, Scholz, Ricardo, Sejkora, Jiří, Čejka, Jiří (2014) A vibrational spectroscopic study of the arsenate minerals cobaltkoritnigite and koritnigite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 125. 313-318 doi:10.1016/j.saa.2014.01.106
Localities for Koritnigite
Showing 16 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.
Chile | |
| Kampf et al. (2013) +1 other reference |
Czech Republic | |
| |
| Stephan Wolfsried collection | |
Germany | |
| Weiß (1990) |
| Schnorrer-Köhler (1988) | |
| Wittern (2001) |
| Der Aufschluss Vol.55 |
Greece | |
| |
| Rieck (1999) | |
Italy | |
| Orlandi (2011) |
| Fernando Caboni et al. (2024) | |
| Fernando Caboni et al. (2024) | |
Japan | |
| 島倉広至 et al. (2015) |
Namibia (TL) | |
| Keller et al. (1979) |
Norway | |
| Kristiansen (2022) |
Spain | |
| Calvo Rebollar et al. (2022) |
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Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic