Clinobehoite
A valid IMA mineral species
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About Clinobehoite
Formula:
Be(OH)2
Colour:
Colorless
Hardness:
2 - 3
Specific Gravity:
1.93
Crystal System:
Monoclinic
Name:
Named for being the monoclinic (clino) polymorph of behoite.
Type Locality:
Dimorph of:
A beryllium hydroxide. Formed by hydrothermal alteration of earlier formed beryllium minerals.
Unique Identifiers
Mindat ID:
1066
Long-form identifier:
mindat:1:1:1066:1
GUID
(UUID V4):
(UUID V4):
22f325ea-23ac-43b7-abd1-5ca44aa4d8f7
IMA Classification of Clinobehoite
Approved
Approval year:
1988
First published:
1989
Classification of Clinobehoite
4.FA.05b
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
A : Hydroxides with OH, without H2O; corner-sharing tetrahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
A : Hydroxides with OH, without H2O; corner-sharing tetrahedra
6.2.3.1
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
2 : X(OH)2
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
2 : X(OH)2
7.4.3
7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
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 |
---|---|---|
Cbht | 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 Clinobehoite
Transparency:
Transparent
Colour:
Colorless
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
(100) perfect, (010) and (001) imperfect
(100) perfect, (010) and (001) imperfect
Density:
1.93 g/cm3 (Measured)
Optical Data of Clinobehoite
Type:
Biaxial (-)
RI values:
nα = 1.539 nβ = 1.544 nγ = 1.548
2V:
Measured: 80° to 83°, Calculated: 82°
Max Birefringence:
δ = 0.009
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:
r < v
Optical Extinction:
Y = b; X ≃ c; Z ∧ a ≃ 9°.
Chemistry of Clinobehoite
Mindat Formula:
Be(OH)2
Elements listed:
Crystallography of Clinobehoite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Cell Parameters:
a = 11.020(8) Å, b = 4.746(6) Å, c = 8.646(9) Å
β = 98.94(8)°
β = 98.94(8)°
Ratio:
a:b:c = 2.322 : 1 : 1.822
Unit Cell V:
0.447 ų
Z:
12
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) |
---|---|---|---|---|---|---|---|
0015616 | Clinobehoite | Nadezhina T N,Pushcharovsky D Y, Rastsvetaeva R K, Voloshin A V, Burshtein I F (1989) Crystal structure of a new natural form of Be(OH)2 Soviet Physics Doklady 34 187-189 | 1989 | Ural Mountains, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.43 Å | (80) |
3.98 Å | (60) |
3.76 Å | (70) |
3.61 Å | (90) |
3.16 Å | (70) |
2.714 Å | (100) |
2.306 Å | (70) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
22 : Hydration and low-𝑇 subsurface aqueous alteration (see also #23) |
Type Occurrence of Clinobehoite
General Appearance of Type Material:
Spherulitic aggregates (up to 1 mm) of lammellar crystals.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Desiliconized pegmatites of the Murzinka region, Ural Mountains, Russia.
Associated Minerals at Type Locality:
Reference:
Voloshin A V, Pakhomovskii Y A, Rogatschev D L, Nadezhina T N, Pustscharovskii D Y, Bahkchisaraytsev A Y (1989) Clinobehoite - A new natural modification of Be(OH)2 from desilicated pegmatites [in Russian]. Mineralogiceskij Zhurnal 11, issue 5, 88-95
Synonyms of Clinobehoite
Other Language Names for Clinobehoite
Related Minerals - Strunz-mindat Grouping
4.FA.05a | Behoite | Be(OH)2 |
4.FA.10 | Ashoverite | Zn(OH)2 |
4.FA.10 | Sweetite | Zn(OH)2 |
4.FA.10 | Wülfingite | Zn(OH)2 |
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 Clinobehoite
mindat.org URL:
https://www.mindat.org/min-1066.html
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Please feel free to link to this page.
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References for Clinobehoite
Reference List:
Localities for Clinobehoite
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.
Egypt | |
| Sallam et al. (2014) |
Russia | |
| |
| |
| Voloshin et al. (1989) +2 other references |
|
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Malyshevo, Sverdlovsk Oblast, Russia