Brezinaite
A valid IMA mineral species
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About Brezinaite
Formula:
Cr3S4
Hardness:
3½ - 4½
Specific Gravity:
4.12 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 1969 by Theodore E. Bunch and Louis H. Fuchs in honor of Maria Aristides Brezina [May 4, 1848 Wien (Vienna), Austria – May 25, 1909 Wien (Vienna), Austria], past Director of the Mineralogy-Petrology Section of the Natural History Museum, Vienna, Austria. Brezina was one of the most important researchers of meteoritics and helped develop an important early classification of meteorites.
Cr3-analogue of zolenskyite.
From Davis (1993):
- Does not occur in troilite aggregates.
- Its appearance and occurrence coincide with daubreelite. It can even form alternating thin lamellae with daubreelite, however, the lamellae cannot be distinguished in reflected light.
- Distinguished by a high degree of anisotropy, varying from barely detectable to very pronounced.
- Also distinguished by common polysynthetic twinning.
From Davis (1993):
- Does not occur in troilite aggregates.
- Its appearance and occurrence coincide with daubreelite. It can even form alternating thin lamellae with daubreelite, however, the lamellae cannot be distinguished in reflected light.
- Distinguished by a high degree of anisotropy, varying from barely detectable to very pronounced.
- Also distinguished by common polysynthetic twinning.
Unique Identifiers
Mindat ID:
768
Long-form identifier:
mindat:1:1:768:3
GUID
(UUID V4):
(UUID V4):
5faac696-68bc-4bf3-8a68-84be4d2d8d8d
IMA Classification of Brezinaite
Approved
Approval year:
1969
First published:
1969
Classification of Brezinaite
2.DA.15
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4
2.10.2.2
2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
3.8.1
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
8 : Sulphides etc. of Cr, Mo, W an Mn
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
8 : Sulphides etc. of Cr, Mo, W an Mn
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 |
---|---|---|
Bzn | 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 Brezinaite
Optical Data of Brezinaite
Colour in reflected light:
Brownish gray
Comments:
Reflectivity 37-40%; very similar to daubreelite.
Chemistry of Brezinaite
Mindat Formula:
Cr3S4
Elements listed:
Common Impurities:
Fe,V,Ti,Mn,Ni
Crystallography of Brezinaite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 5.96(1) Å, b = 3.425(5) Å, c = 11.270(15) Å
β = 91.53°
β = 91.53°
Ratio:
a:b:c = 1.74 : 1 : 3.291
Unit Cell V:
229.97 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Anhedral grains to 3mm
Twinning:
Polysynthetic. Most commonly seen as two sets of lamallae almost at right angles. Sometimes a third set of more irregular twins is observed to intersect the first two at an oblique angle.
Comment:
Space Group: I2/m (synthetic)
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0009201 | Brezinaite | Jellinek F (1957) The structures of the chromium sulphides Acta Crystallographica 10 620-628 | 1957 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.644 Å | (100) |
5.67 Å | (70) |
2.056 Å | (70) |
1.716 Å | (70) |
2.978 Å | (65) |
2.606 Å | (60) |
5.23 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
5 : Primary asteroid phases | 4.566–4.560 |
6 : Secondary asteroid phases | 4.566-4.560 |
Geological Setting:
Meteorite
Type Occurrence of Brezinaite
General Appearance of Type Material:
Tiny (5-80 micron) anhedral grains in nickel-iron matrix and contiguous to silicate inclusions.
Place of Conservation of Type Material:
Meteorite Collection, National Museum of Natural History, Washington, D.C., USA.
Geological Setting of Type Material:
Iron meteorite.
Associated Minerals at Type Locality:
Reference:
Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Synonyms of Brezinaite
Other Language Names for Brezinaite
Common Associates
Associated Minerals Based on Photo Data:
6 photos of Brezinaite associated with Kamacite | (Fe,Ni) |
6 photos of Brezinaite associated with Troilite | FeS |
4 photos of Brezinaite associated with Schreibersite | (Fe,Ni)3P |
1 photo of Brezinaite associated with Forsterite | Mg2SiO4 |
Related Minerals - Strunz-mindat Grouping
2.DA. | Zaykovite | Rh3Se4 |
2.DA. | Grimmite | NiCo2S4 |
2.DA. | Zolenskyite | FeCr2S4 |
2.DA. | Ezochiite | Cu+(Rh3+Pt4+)S4 |
2.DA. | Ferrodimolybdenite | FeMo2S4 |
2.DA.05 | Bornhardtite | Co2+Co3+2Se4 |
2.DA.05 | Carrollite | CuCo2S4 |
2.DA.05 | Cuproiridsite | (Cu,Fe)Ir2S4 |
2.DA.05 | Cuprorhodsite | (Cu1+0.5Fe3+0.5)Rh3+2S4 |
2.DA.05 | Daubréelite | Fe2+Cr3+2S4 |
2.DA.05 | Fletcherite | CuNi2S4 |
2.DA.05 | Florensovite | (Cu,Zn)Cr1.5Sb0.5S4 |
2.DA.05 | Greigite | Fe2+Fe3+2S4 |
2.DA.05 | Indite | FeIn2S4 |
2.DA.05 | Kalininite | ZnCr2S4 |
2.DA.05 | Linnaeite | Co2+Co3+2S4 |
2.DA.05 | Malanite | Cu1+(Ir3+Pt4+)S4 |
2.DA.05 | Polydymite | Ni2+Ni3+2S4 |
2.DA.05 | Siegenite | CoNi2S4 |
2.DA.05 | Trüstedtite | Ni3Se4 |
2.DA.05 | Tyrrellite | Cu(Co3+,Ni3+)2Se4 |
2.DA.05 | Violarite | Fe2+Ni3+2S4 |
2.DA.05 | Xingzhongite | Pb2+Ir3+2S4 |
2.DA.05 | Cadmoindite | CdIn2S4 |
2.DA.05 | Cuprokalininite | CuCr2S4 |
2.DA.05 | Joegoldsteinite | MnCr2S4 |
2.DA.05 | Nickeltyrrellite | CuNi2Se4 |
2.DA.10 | Rhodostannite | Cu1+(Fe2+0.5Sn4+1.5)S4 |
2.DA.10 | Toyohaite | Ag1+(Fe2+0.5Sn4+1.5)S4 |
2.DA.15 | Heideite | (Fe,Cr)1.15(Ti,Fe)2S4 |
2.DA.20 | Inaglyite | Cu3Pb(Ir,Pt)8S16 |
2.DA.20 | Konderite | Cu3Pb(Rh,Pt,Ir)8S16 |
2.DA.25 | Kingstonite | (Rh,Ir,Pt)3S4 |
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.
Industrial Uses:
None.
Internet Links for Brezinaite
mindat.org URL:
https://www.mindat.org/min-768.html
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References for Brezinaite
Reference List:
Localities for Brezinaite
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 | |
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Mexico | |
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Namibia | |
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Northwest Africa Meteorites | |
Russia | |
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USA (TL) | |
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Sikhote-Alin meteorite, Paseka, Krasnoarmeysky District, Primorsky Krai, Russia