Clinometaborite
A valid IMA mineral species
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About Clinometaborite
Formula:
HBO2
Colour:
Colorless
Lustre:
Vitreous
Specific Gravity:
2.049 (Calculated)
Crystal System:
Monoclinic
Name:
Named for being a monoclinic modification of metaboric acid.
Type Locality:
Dimorph of:
Known as a synthetic phase.
Unique Identifiers
Mindat ID:
40567
Long-form identifier:
mindat:1:1:40567:2
IMA Classification of Clinometaborite
Approved
IMA Formula:
HBO2
Approval year:
2010
First published:
2011
Classification of Clinometaborite
6.00.
6 : BORATES
0 :
0 :
6 : BORATES
0 :
0 :
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Cmbo | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Physical Properties of Clinometaborite
Vitreous
Transparency:
Translucent
Colour:
Colorless
Comment:
chalky white after some months of exposure to open air.
Streak:
White
Tenacity:
Brittle
Cleavage:
Perfect
Density:
2.049 g/cm3 (Calculated)
Chemistry of Clinometaborite
Mindat Formula:
HBO2
Elements listed:
Crystallography of Clinometaborite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 7.1215(3) Å, b = 8.8448(4) Å, c = 6.7665(3) Å
β = 93.2334(4)°
β = 93.2334(4)°
Ratio:
a:b:c = 0.805 : 1 : 0.765
Unit Cell V:
425.53 ų (Calculated from Unit Cell)
Z:
12
Morphology:
prismatic
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) |
|---|---|---|---|---|---|---|---|
| 0018577 | Clinometaborite | Demartin F, Gramaccioli C M, Campostrini I (2011) Clinometaborite, natural beta-metaboric acid, from La Fossa Crater, Vulcano, Aeolian Islands, Italy The Canadian Mineralogist 49 1273-1279 | 2011 | La Fossa Crater, Vulcano, Aeolian Islands, Italy | 0 | 293 | |
| 0018653 | Clinometaborite | Freyhardt C C, Wiebcke M, Felsche J (2000) The monoclinic and cubic phases of metaboric acid (precise redeterminations) Acta Crystallographica C56 276-278 |  | 2000 | synthetic | 0 | 293 |
| 0018978 | Clinometaborite | Zachariasen W H (1963) The crystal structure of monoclinic metaboric acid Acta Crystallographica 16 385-389 | | 1963 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.752 Å | (17) |
| 3.552 Å | (6) |
| 3.219 Å | (6) |
| 3.179 Å | (14) |
| 3.074 Å | (100) |
| 1.848 Å | (4) |
| 1.818 Å | (2) |
| 1.695 Å | (4) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Clinometaborite
General Appearance of Type Material:
aggregates of stout crystals up to 2 mm long
Place of Conservation of Type Material:
Reference Collection of Dipartimento di Chimica Strutturale e Stereochimica Inorganica of Università degli Studi di Milano (catalogue no. 2010–03).
Geological Setting of Type Material:
sublimate in an active medium-temperature intracrater fumarole
Associated Minerals at Type Locality:
Synonyms of Clinometaborite
Other Language Names for Clinometaborite
Dutch:Clinometaboriet
German:Klinometaborit
Common Associates
Associations Based on Photo Data:
| 1 photo of Clinometaborite associated with Metaborite | HBO2 |
| 1 photo of Clinometaborite associated with Sassolite | H3BO3 |
Fluorescence of Clinometaborite
Not fluorescent either under shortwave or long-wave ultraviolet radiation
Other Information
Special Storage/
Display Requirements:
Display Requirements:
chalky white after some months of exposure to open air.
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 Clinometaborite
mindat.org URL:
https://www.mindat.org/min-40567.html
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References for Clinometaborite
Reference List:
Zachariasen, W. H. (1963) The crystal structure of monoclinic metaboric acid. Acta Crystallographica, 16 (5) 385-389 doi:10.1107/s0365110x6300102x
Freyhardt, Clemens C., Wiebcke, Michael, Felsche, Jürgen (2000) The monoclinic and cubic phases of metaboric acid (precise redeterminations) Acta Crystallographica Section C Crystal Structure Communications, 56 (3) 276-278 doi:10.1107/s0108270199016042
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2010) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) CNMNC Newsletter No 4. Mineralogical Magazine, 74 (4) 797-800 doi:10.1180/s0026461x00038925
Localities for Clinometaborite
Showing 1 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.
Italy (TL) | |
| Williams et al. (2010) +1 other reference |
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La Fossa crater, Vulcano Island, Lipari, Eolie Islands, Metropolitan City of Messina, Sicily, Italy