Priceite (original) (raw)
A valid IMA mineral species - grandfathered
About PriceiteHide
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Formula:
Ca2B5O7(OH)5 · H2O
Colour:
White; colourless in transmitted light
Crystal System:
Monoclinic
Name:
Named in honor of Thomas Price (1837 Brecon, Breconshire, Wales - 13 October 1912), a metallurgist, chemist and assayer who first analyzed the mineral. He began his career as an assayer and professor in Swansea. In 1862 he moved to San Francisco and worked for the San Francisco Refinery, taught chemistry and toxicology at Toland Medical College, and later was an international consultant for mining companies.
Occurs as nodules or irregular masses; soft and chalky, to hard, compact and tough with porcellanous texture and sub-conchoidal fracture. Rarely also as small colourless crystals.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:3281:6
bbda98bf-922a-4d89-b9c5-5960a0a9c176
IMA Classification of PriceiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of PriceiteHide
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6.EB.25
6 : BORATES
E : Pentaborates
B : Ino-pentaborates
25.5.1.1
25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
9.3.18
9 : Borates
3 : Borates of Ca and Sr
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Pce | 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 PriceiteHide
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Colour:
White; colourless in transmitted light
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.42 g/cm3 (Measured)
Optical Data of PriceiteHide
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RI values:
_n_α = 1.571 - 1.573 _n_β = 1.590 - 1.591 _n_γ = 1.593 - 1.594
2V:
Measured: 32° to 44°, Calculated: 42° to 44°
δ = 0.022
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of PriceiteHide
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Mindat Formula:
Ca2B5O7(OH)5 · H2O
Crystallography of PriceiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 11.623 Å, b = 6.976 Å, c = 12.35 Å
β = 110.7°
Ratio:
a:b:c = 1.666 : 1 : 1.77
Unit Cell V:
936.72 ų (Calculated from Unit Cell)
Morphology:
Nodules and irregular masses. Compact and tough, chalky to hard.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005789 | Priceite | Wallwork K S, Pring A, Taylor M R, Hunter B A (2002) The structure of priceite, a basic hydrated calcium borate, by ab initio powder-diffraction methods The Canadian Mineralogist 40 1199-1206 |  |
2002 | 0 | 293 | |
| 0018466 | Priceite | Sun W, Huang Y-X, Li Z, Pan Y, Mi J-X (2011) Hydrothermal synthesis and single-crystal X-ray structure refinement of three borates: sibirskite, parasibirskite and priceite The Canadian Mineralogist 49 823-834 | 2011 | synthetic | 0 | 173 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.92 Å | (100) |
| 3.63 Å | (100) |
| 5.46 Å | (80) |
| 3.49 Å | (70) |
| 2.72 Å | (60) |
| 2.18 Å | (50) |
| 4.29 Å | (40) |
| 5.99 Å | (20) |
| 2.88 Å | (20) |
| 2.33 Å | (20) |
| 2.16 Å | (20) |
| 1.94 Å | (20) |
| 1.82 Å | (20) |
Comments:
Data from Kramer & Allen Am. Min. vol.41 (1956) [JCPDS card 9-147]
Geological EnvironmentHide
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Geological Setting:
Evaporite deposits.
Type Occurrence of PriceiteHide
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General Appearance of Type Material:
Compact and as roundish masses to several hundred pounds (100 kg ?)
Geological Setting of Type Material:
Associated Minerals at Type Locality:
Synonyms of PriceiteHide
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Other Language Names for PriceiteHide
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Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Notes:
Insoluble in water. Readily soluble in acids.
Alters to colemanite and calcite.
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 PriceiteHide
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References for PriceiteHide
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Reference List:
Wallwork, K. S., Pring, A., Taylor, M. R., Hunter, B. A. (2002) The structure of priceite, a basic hydrated calcium borate, by ab initio powder-diffraction methods. The Canadian Mineralogist, 40 (4) 1199-1206 doi:10.2113/gscanmin.40.4.1199
Sun, W., Huang, Y.-X., Li, Z., Pan, Y., Mi, J.-X. (2011) Hydrothermal synthesis and single-crystal X-ray structure refinement of three borates: sibirskite, parasibirskite and priceite. The Canadian Mineralogist, 49 (3) 823-834 doi:10.3749/canmin.49.3.823
Kobayashi, Shoichi, Ando, Tamami, Tanabe, Mitsuo, Kishi, Shigetomo, Kusachi, Isao (2017) Priceite from the Fuka mine, Okayama Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 112 (1) 20-24 doi:10.2465/jmps.160902
Localities for PriceiteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- 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.