Olshanskyite
A valid IMA mineral species
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About Olshanskyite
Formula:
Ca2[B3O3(OH)6](OH) · 3H2O
Colour:
Colorless, white
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
2.19 - 2.23
Crystal System:
Triclinic
Name:
Name for Yakov Iosifovich Ol'shanskii (Яков Иосифович Ольшанский) (1912-1958), specialist in physical geochemistry at the Institute of Geology of Ore Deposits, Petrology, Mineralogy, and Geochemistry (IGEM), Moscow, Russia.
This page provides mineralogical data about Olshanskyite.
Unique Identifiers
Mindat ID:
2988
Long-form identifier:
mindat:1:1:2988:5
GUID
(UUID V4):
(UUID V4):
6750cad9-9879-4403-b86d-20ce116a9ff9
IMA Classification of Olshanskyite
Approved
IMA Formula:
Ca2[B3O3(OH)6]OH · 3H2O
Approval year:
1968
First published:
1969
Classification of Olshanskyite
6.CA.55
6 : BORATES
C : Triborates
A : Neso-triborates
6 : BORATES
C : Triborates
A : Neso-triborates
25.1.6.1
25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates
25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates
9.3.6
9 : Borates
3 : Borates of Ca and Sr
9 : Borates
3 : Borates of Ca and Sr
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 |
|---|---|---|
| Osh | 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 Olshanskyite
Vitreous
Transparency:
Translucent
Colour:
Colorless, white
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Density:
2.19 - 2.23 g/cm3 (Measured) 2.31 g/cm3 (Calculated)
Optical Data of Olshanskyite
Type:
Biaxial (-)
RI values:
nα = 1.557 nβ = 1.568 nγ = 1.570
2V:
Measured: 54° , Calculated: 44°
Max Birefringence:
δ = 0.013
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:
Low
Dispersion:
weak
Chemistry of Olshanskyite
Mindat Formula:
Ca2[B3O3(OH)6](OH) · 3H2O
Elements listed:
Crystallography of Olshanskyite
Crystal System:
Triclinic
Cell Parameters:
a = 9.991(5) Å, b = 14.740(11) Å, c = 7.975(3) Å
α = 94.53(4)°, β = 69.08(3)°, γ = 112.44(5)°
α = 94.53(4)°, β = 69.08(3)°, γ = 112.44(5)°
Ratio:
a:b:c = 0.678 : 1 : 0.541
Unit Cell V:
1,011.73 ų (Calculated from Unit Cell)
Z:
3
Twinning:
Polysynthetically twinned
Comment:
Space Group: P-1 or P1
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) |
|---|---|---|---|---|---|---|---|
| 0005707 | Olshanskyite | Callegari A, Mazzi F, Tadini C (2001) The crystal structure of olshanskyite The Canadian Mineralogist 39 137-144 |  | 2001 | Fuka mine, Okayama Prefecture, Japan | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.873 Å | (100) |
| 6.79 Å | (52) |
| 4.49 Å | (49) |
| 6.72 Å | (40) |
| 2.573 Å | (35) |
| 7.42 Å | (34) |
| 8.63 Å | (32) |
Comments:
Fuka, Japan. Data from Kusachi and Henmi (1994).
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) |
Type Occurrence of Olshanskyite
General Appearance of Type Material:
Transverse-fibrous aggregates of polysynthetically twinned crystals, 0.02-0.03 mm in size.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 1493/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 71541–71544.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 71541–71544.
Geological Setting of Type Material:
Skarn.
Associated Minerals at Type Locality:
Reference:
Bogomolov, M.A., I.B. Nikitina, and N.N. Pertsev (1969) Olshanskyite, a new calcium borate. Doklady Akademii Nauk SSSR: 184: 1398–1401.
Synonyms of Olshanskyite
Other Language Names for Olshanskyite
Common Associates
Associated Minerals Based on Photo Data:
| 60 photos of Olshanskyite associated with Roweite | Ca2Mn2+2B4O7(OH)6 |
| 44 photos of Olshanskyite associated with Henmilite | Ca2Cu[B(OH)4]2(OH)4 |
| 40 photos of Olshanskyite associated with Andradite | Ca3Fe3+2(SiO4)3 |
| 16 photos of Olshanskyite associated with Magnetite | Fe2+Fe3+2O4 |
| 16 photos of Olshanskyite associated with Calcite | CaCO3 |
| 13 photos of Olshanskyite associated with Wurtzite | (Zn,Fe)S |
| 11 photos of Olshanskyite associated with Galena | PbS |
| 5 photos of Olshanskyite associated with Sakhaite | Ca48Mg16(BO3)32(CO3)16 · 2(H2O,HCl) |
| 2 photos of Olshanskyite associated with Johnbaumite | Ca5(AsO4)3(OH) |
| 1 photo of Olshanskyite associated with Garnet Group | X3Z2(SiO4)3 |
Related Minerals - Strunz-mindat Grouping
| 6.CA.10 | Ameghinite | Na(H4B3O7) |
| 6.CA.15 | Inderite | MgB3O3(OH)5 · 5H2O |
| 6.CA.20 | Kurnakovite | MgB3O3(OH)5 · 5H2O |
| 6.CA.25 | Inderborite | CaMg(H3B3O7)2 · 8H2O |
| 6.CA.30 | Meyerhofferite | CaB3O3(OH)5 · H2O |
| 6.CA.35 | Inyoite | Ca(H4B3O7)(OH) · 4H2O |
| 6.CA.40 | Solongoite | Ca2(H3B3O7)(OH)Cl |
| 6.CA.45 | Peprossiite-(Ce) | (Ce,La)(Al3O)2/3B4O10 |
| 6.CA.50 | Nifontovite | Ca3B6O6(OH)12(H2O)2 |
Other Information
Notes:
Readily soluble in HCl.
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 Olshanskyite
mindat.org URL:
https://www.mindat.org/min-2988.html
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References for Olshanskyite
Reference List:
Kusachi, Isao, Henmi, Chiyoko (1994) Nifontovite and olshanskyite from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 58 (391) 279-284 doi:10.1180/minmag.1994.058.391.10
Callegari, A., Mazzi, F., Tadini, C. (2001) The Crystal Structure of Olshanskyite. The Canadian Mineralogist, 39 (1) 137-144 doi:10.2113/gscanmin.39.1.137
Localities for Olshanskyite
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.
China | |
| Ottens et al. (2014) |
Japan | |
| Mineralogical Record: 27: 306. +3 other references |
Russia (TL) | |
| Bogomolov et al. (1969) +1 other reference |
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Shijiangshan mine, Hexigten Banner, Chifeng City, Inner Mongolia, China