Trippkeite
A valid IMA mineral species - grandfathered
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About Trippkeite
Formula:
Cu2+As3+2O4
Colour:
Brilliant greenish-blue, pistachio-green; pale bluish green in transmitted light; with neon-blue internal reflections.
Lustre:
Waxy, Greasy, Pearly
Hardness:
4
Specific Gravity:
4.8
Crystal System:
Tetragonal
Member of:
Name:
Named after Dr. Paul Trippke (1851- June 16, 1880), Polish petrologist of University of Breslau who discovered the mineral.
Type Locality:
Isostructural with:
Blue crystalline-appearing aggregates with rare crystals. Bright pearly neon-blue internal reflections on cleavages.
Unique Identifiers
Mindat ID:
4023
Long-form identifier:
mindat:1:1:4023:1
IMA Classification of Trippkeite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1880
Classification of Trippkeite
4.JA.20
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
A : Arsenites, antimonites, bismuthites; without additional anions, without H2O
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
A : Arsenites, antimonites, bismuthites; without additional anions, without H2O
45.1.5.1
45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous
45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous
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 |
|---|---|---|
| Tpk | 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 Trippkeite
Waxy, Greasy, Pearly
Transparency:
Transparent
Comment:
Not adamantine as commonly given. Bright internal reflections.
Colour:
Brilliant greenish-blue, pistachio-green; pale bluish green in transmitted light; with neon-blue internal reflections.
Streak:
Pale blue
Hardness:
4 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
On {100}, perfect; on {110}, good.
On {100}, perfect; on {110}, good.
Fracture:
Micaceous
Density:
4.8 g/cm3 (Measured) 4.49 g/cm3 (Calculated)
Optical Data of Trippkeite
Type:
Uniaxial (+)
RI values:
nω = 1.90 nε = 2.12
Birefringence:
0.22
Max. Birefringence:
δ = 0.220
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.
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.
Surface Relief:
Moderate
Pleochroism:
Not Visible
Chemistry of Trippkeite
Mindat Formula:
Cu2+As3+2O4
Element Weights:
Elements listed:
Crystallography of Trippkeite
Crystal System:
Tetragonal
Class (H-M):
4/mmm(4/m2/m2/m) - Ditetragonal Dipyramidal
Space Group:
P42/mbc
Cell Parameters:
a = 8.592 Å, c = 5.573 Å
Ratio:
a:c = 1 : 0.649
Unit Cell V:
411.41 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals short prismatic to equant, exhibiting {021}, {100}, and {001} as dominant forms, plus four additional forms. Crystals may be bent.
Comment:
Space group attribution based on synthetic material.
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) |
|---|---|---|---|---|---|---|---|
| 0015632 | Trippkeite | Zemann J (1951) Formel und kristallstruktur des trippkeits Tschermaks Mineralogische und Petrographische Mitteilungen 2 417-423 | 1951 | Copiapo, Chile | 0 | 293 | |
| 0015655 | Trippkeite | Pertlik F (1975) Verfeinerung der kristallstruktur von synthetischem trippkeit, CuAs2O4 Tschermaks Mineralogische und Petrographische Mitteilungen 22 211-217 | 1975 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.07 Å | (60) |
| 3.16 Å | (100) |
| 3.04 Å | (50) |
| 2.72 Å | (40) |
| 2.53 Å | (20) |
| 1.95 Å | (40) |
| 1.64 Å | (30) |
| 1.39 Å | (20) |
Comments:
31-0451
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 Trippkeite
Place of Conservation of Type Material:
Muséum Nationale d’Histoire Naturelle, Paris, France, number 100.348.
Mineralogisch-Petrographisches Institut und Museum, Bonn, Germany, Tresor des Museums.
Mineralogisch-Petrographisches Institut und Museum, Bonn, Germany, Tresor des Museums.
Geological Setting of Type Material:
Copper deposit
Associated Minerals at Type Locality:
Other Language Names for Trippkeite
Dutch:Trippkeiet
German:Trippkeit
Russian:Триппкеит
Simplified Chinese:软砷铜矿
Spanish:Trippkeita
Traditional Chinese:軟砷銅礦
Relationship of Trippkeite to other Species
Member of:
Other Members of Minium Group:
| Igelströmite | Fe3+(Sb3+Pb2+)O4 | Tet. 4/mmm(4/m2/m2/m) : P42/mbc |
| Manganoschafarzikite | MnSb2O4 | Tet. 4/mmm(4/m2/m2/m) : P42/mbc |
| Minium | Pb3O4 | Tet. 4/mmm(4/m2/m2/m) : P42/mbc |
| Schafarzikite | Fe2+Sb3+2O4 | Tet. 4/mmm(4/m2/m2/m) : P42/mbc |
Common Associates
Associations Based on Photo Data:
| 12 photos of Trippkeite associated with Cuprite | Cu2O |
| 5 photos of Trippkeite associated with Theoparacelsite | Cu3(As2O7)(OH)2 |
| 4 photos of Trippkeite associated with Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| 3 photos of Trippkeite associated with Domeykite | Cu3As |
| 3 photos of Trippkeite associated with Malachite | Cu2(CO3)(OH)2 |
| 3 photos of Trippkeite associated with Native Copper | Cu |
| 2 photos of Trippkeite associated with Embreyite | Pb5(CrO4)2(PO4)2 · H2O |
| 2 photos of Trippkeite associated with Olivenite | Cu2(AsO4)(OH) |
| 1 photo of Trippkeite associated with Shattuckite | Cu5(Si2O6)2(OH)2 |
| 1 photo of Trippkeite associated with Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O |
Related Minerals - Strunz-mindat Grouping
| 4.JA.05 | Leiteite | Zn(As2O4) |
| 4.JA.10 | Reinerite | Zn3(AsO3)2 |
| 4.JA.15 | Karibibite | Fe3+3(As3+O2)4(As3+2O5)(OH) |
| 4.JA.20 | Manganoschafarzikite | MnSb2O4 |
| 4.JA.20 | Schafarzikite | Fe2+Sb3+2O4 |
| 4.JA.20 | Kusachiite | CuBi2O4 |
| 4.JA.20 | Igelströmite | Fe3+(Sb3+Pb2+)O4 |
| 4.JA.25 | Apuanite | Fe2+Fe3+4Sb3+4O12S |
| 4.JA.30 | Versiliaite | Fe2Fe4Sb6O16S |
| 4.JA.35 | Schneiderhöhnite | Fe2+Fe3+3As3+5O13 |
| 4.JA.40 | Zimbabweite | (Na,K)2PbAs4(Ta,Nb,Ti)4O18 |
| 4.JA.45 | Ludlockite | PbFe3+4As3+10O22 |
| 4.JA.50 | Paulmooreite | Pb2[As2O5] |
| 4.JA.55 | Stibivanite | Sb2VO5 |
| 4.JA.60 | Chadwickite | (UO2)[HAsO3] |
Other Information
Notes:
Cleavage tends to break the crystals into shreds or fibers parallel to [001], which are easily bent.
Readily soluble in HCl or HNO3.
Readily soluble in HCl or 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 Trippkeite
mindat.org URL:
https://www.mindat.org/min-4023.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Trippkeite
Reference List:
Damour, A., vom Rath, G. (1880) Ueber den Trippkeït, eine neue Mineralspecies. Zeitschrift für Krystallographie, 5 (23). 245 doi:10.1524/zkri.1880.5.23.245
Goldschmidt, Victor (1891) Index der Krystallformen der Mineralien Vol. 3. Springer Berlin Heidelberg. doi:10.1007/978-3-662-25554-4 p.239
Larsen, Esper S. (1921) The microscopic determination of the nonopaque minerals. Bulletin 679. US Geological Survey doi:10.3133/b679 p.145
Zemann, Josef (1951) Formel und Kristallstruktur des Trippkeits. Tschermaks Mineralogische und Petrographische Mitteilungen, 2 (4) 417-423 doi:10.1007/bf01135291
Pertlik, F. (1975) Verfeinerung der Kristallstruktur von synthetischem Trippkeit, CuAs2O4. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 22 (3) 211-217 doi:10.1007/bf01087840
Pertlik, F. (1977) Zur Synthese von Kristallen von CuAs2O4 (Trippkeit) und Cu2As3O6CH3COO (Eine Komponente des Farbpigments "Schweinfurter Grün"). Zeitschrift für anorganische und allgemeine Chemie, 436 (1). 201-206 doi:10.1002/zaac.19774360124
Kharbish, S. (2012) Raman spectra of minerals containing interconnected As(Sb)O3 pyramids: trippkeite and schafarzikite. Journal of GEOsciences, 57 (1) 53-62
Localities for Trippkeite
Showing 8 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 (TL) | |
| Palache et al. (1951) +1 other reference |
France | |
| |
Greece | |
| Rieck et al. (1999) |
Malaysia | |
| Kiong et al. (2004) |
| Ariffin (2009) | |
Russia | |
| Kuzhuget et al. (2015) |
South Africa | |
| Meulenbeld et al. (2014) |
USA | |
| Möckel (2018) |
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Roua Mines, Daluis, Nice Arrondissement, Alpes-Maritimes, Provence-Alpes-Côte d'Azur, France