Mariinskite
A valid IMA mineral species
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About Mariinskite
Unique Identifiers
Mindat ID:
42842
Long-form identifier:
mindat:1:1:42842:4
GUID
(UUID V4):
(UUID V4):
fb1288ff-e29c-42e1-be7c-59603b09a619
IMA Classification of Mariinskite
Approved
IMA Formula:
BeCr2O4
Approval year:
2011
First published:
2013
Classification of Mariinskite
4.BA.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
A : With small and medium-sized cations
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
A : With small and medium-sized cations
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 |
---|---|---|
Mii | 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 Mariinskite
Vitreous
Transparency:
Transparent
Colour:
black to dark green
Streak:
light green
Hardness:
8½ on Mohs scale
Hardness:
VHN150=1725 kg/mm2 - Vickers
Density:
4.25(2) g/cm3 (Measured) 4.25 g/cm3 (Calculated)
Optical Data of Mariinskite
Type:
Biaxial (+)
RI values:
nα = 2.050 nβ = 2.090(3) nγ = 2.150(1)
2V:
Measured: 80° (10), Calculated: 80.5°
Max Birefringence:
δ = 0.100
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:
Very High
Anisotropism:
weak
Bireflectance:
weak
Colour in reflected light:
gray with a very weak bluish tint
Internal Reflections:
strong - green
Pleochroism:
Strong
Comments:
emerald green on X, yellow green on Y to greenish yellow on Z.
emerald-green (Ng) to yellowish-green (Np).
emerald-green (Ng) to yellowish-green (Np).
Chemistry of Mariinskite
Mindat Formula:
BeCr2O4
Elements listed:
Crystallography of Mariinskite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 9.709(2) Å, b = 5.612(1) Å, c = 4.492(1) Å
Ratio:
a:b:c = 1.73 : 1 : 0.8
Unit Cell V:
244.76 ų (Calculated from Unit Cell)
Z:
4
Twinning:
Pseudohexagonal chrysoberyl-type twins
Comment:
Originally assumed to be Pnma.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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) |
---|---|---|---|---|---|---|---|
0020027 | Mariinskite | Yamnova N A, Aksenov S M, Pautov L A, Popov M P, Erokhin Y V (2014) Specific features of cation distribution in the crystal structure of mariinskite BeCr2O4 (derivative of olivine-type structure) Crystallography Reports 59 30-35 | 2014 | Mariinskoe deposit (Middle Urals, Russia) | 0 | 293 | |
0020028 | Mariinskite | Yamnova N A, Aksenov S M, Pautov L A, Popov M P, Erokhin Y V (2014) Specific features of cation distribution in the crystal structure of mariinskite BeCr2O4 (derivative of olivine-type structure) Crystallography Reports 59 30-35 | 2014 | Mariinskoe deposit (Middle Urals, Russia) | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.85 Å | (3) |
4.08 Å | (4) |
3.31 Å | (9) |
2.629 Å | (5) |
2.434 Å | (5) |
2.381 Å | (4) |
2.139 Å | (6) |
1.651 Å | (10) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earth’s earliest Hadean crust | >4.50 |
7 : Ultramafic igneous rocks |
Type Occurrence of Mariinskite
General Appearance of Type Material:
anhedral fine grains
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Science, Leninsky Prospect,Moscow, Russia, registration number 4159/1
Geological Setting of Type Material:
Chromite pod in serpentinite
Associated Minerals at Type Locality:
Reference:
Pautov, L.A., Popov, M.P., Erokhin, Y.V., Khiller, V.V., Karpenko, V.Y. (2013). Mariinskite, BeCr2O4, a new mineral, chromium analog of chrysoberyl. Geology of Ore Deposits: 55(8): 648-662.
Synonyms of Mariinskite
Common Associates
Associated Minerals Based on Photo Data:
12 photos of Mariinskite associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
11 photos of Mariinskite associated with Chromite | Fe2+Cr3+2O4 |
Related Minerals - Strunz-mindat Grouping
4.BA. | Chihmingite | NiAl2O4 |
4.BA.05 | Chrysoberyl | BeAl2O4 |
Fluorescence of Mariinskite
none
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 Mariinskite
mindat.org URL:
https://www.mindat.org/min-42842.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Mariinskite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011. CNMNC Newsletter No 11. Mineralogical Magazine, 75 (6) 2887-2893 doi:10.1180/minmag.2011.075.6.2887
Pautov, L. A., Popov, M. P., Erokhin, Yu. V., Khiller, V. V., Karpenko, V. Yu. (2013) Mariinskite, BeCr2O4, a new mineral, chromium analog of chrysoberyl. Geology of Ore Deposits, 55 (8) 648-662 doi:10.1134/s1075701513080096
Yamnova, N. A., Aksenov, S. M., Pautov, L. A., Popov, M. P., Erokhin, Yu. V. (2014) Specific features of cation distribution in the crystal structure of mariinskite BeCr2O4 (Derivative of olivine-type structure) Crystallography Reports, 59 (1) 30-35 doi:10.1134/s1063774514010192
Localities for Mariinskite
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.
Russia | |
| Буханова (2018) |
| Erokhin et al. (2014) +1 other reference |
| Williams et al. (2011) +2 other references |
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Malyshevskoe deposit, Malyshevo, Sverdlovsk Oblast, Russia