Barytocalcite (original) (raw)
A valid IMA mineral species - grandfathered
About BarytocalciteHide
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Colour:
Colourless, white, greyish, greenish, light yellow
Lustre:
Vitreous, Resinous
Specific Gravity:
3.66 - 3.71
Crystal System:
Monoclinic
Name:
In allusion to the composition, containing BARium and CALCium
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:466:8
e08f5803-752c-4f17-8942-220ff7a99e92
IMA Classification of BarytocalciteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of BarytocalciteHide
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5.AB.45
5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
B : Alkali-earth (and other M2+) carbonates
14.2.6.1
14 : ANHYDROUS NORMAL CARBONATES
2 : AB(XO3)2
11.5.6
11 : Carbonates
5 : Carbonates of Sr and Ba
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Bcal | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Bcl | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Pronunciation of BarytocalciteHide
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Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Sorry, your browser doesn't support HTML5 audio. | Jolyon Ralph | United Kingdom |
Physical Properties of BarytocalciteHide
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Transparency:
Transparent, Translucent
Colour:
Colourless, white, greyish, greenish, light yellow
Fracture:
Irregular/Uneven, Conchoidal
Density:
3.66 - 3.71 g/cm3 (Measured) 3.65 g/cm3 (Calculated)
Optical Data of BarytocalciteHide
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RI values:
_n_α = 1.525 _n_β = 1.684 _n_γ = 1.686
2V:
Measured: 15° , Calculated: 10°
δ = 0.161
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Dispersion:
relatively weak
Chemistry of BarytocalciteHide
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Mindat Formula:
BaCa(CO3)2
Crystallography of BarytocalciteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 8.092(1) Å, b = 5.2344(6) Å, c = 6.544(1) Å
β = 106.05(1)°
Ratio:
a:b:c = 1.546 : 1 : 1.25
Unit Cell V:
266.38 ų (Calculated from Unit Cell)
Morphology:
Crystals normally short to long prismatic [101], also short prismatic [001] or equant. {100} striated [001]; and {111}, {252}, {131} striated [101]. Massive.
Comment:
Cell from Dickens & Bowen (1971). Older cell: 8.13, 5.22, 6.54 Å, 106°.
Crystallographic forms of BarytocalciteHide
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Crystal Atlas:
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3d models and HTML5 code kindly provided bywww.smorf.nl.
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Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012045 | Barytocalcite | Alm K F (1960) The crystal structure of barytocalcite BaCa(CO3)2 Arkiv for Mineralogi och Geologi 2 399-410 | 1960 | 0 | 293 | ||
| 0013289 | Barytocalcite | Dickens B, Bowen J S (1971) The crystal structure of BaCa(CO3)2 (barytocalcite) Journal of Research of the National Bureau of Standards - Physics and Chemistry 75A 197-203 | 1971 | Cumberland, England | 0 | 293 | |
| 0017643 | Barytocalcite | Gossner B, Mussgnug F (1930) Beitrag zur Kenntnis des Barytocalcits und seiner strukturellen Beziehungen zu anderen Stoffen _cod_database_code 1010917 Zentralblatt fur Mineralogie und Geologie, A1930 321-328 | 1930 | 0 | 293 |
CIF Raw Data - click here to close
Epitaxial Relationships of BarytocalciteHide
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Epitaxy Comments:
Witherite xls in parallel growth on Barytocalcite from Blagill. Baryte on barytocalcite, with baryte {001}[010] parallel to barytocalcite {001}[010]. Calcite on barytocalcite, with calcite (1011), (1101), and (0111) approximately parallel to barytocalcite (101), (111), and (111).
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 |
|---|---|
| 4.345 Å | (25) |
| 4.018 Å | (40) |
| 3.140 Å | (90) |
| 3.125 Å | (100) |
| 2.512 Å | (20) |
| 2.379 Å | (20) |
| 2.157 Å | (25) |
Geological EnvironmentHide
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Type Occurrence of BarytocalciteHide
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Geological Setting of Type Material:
Associated Minerals at Type Locality:
Other Language Names for BarytocalciteHide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Fluorescence of BarytocalciteHide
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Dull yellow (LW & SW UV).
Other InformationHide
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Notes:
Soluble in dilute HCl.
Baryte and Quartz pseudomorphs after Barytocalcite observed.
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 BarytocalciteHide
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References for BarytocalciteHide
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Reference List:
Spahr, Dominik, Bayarjargal, Lkhamsuren, Vinograd, Victor, Luchitskaia, Rita, Milman, Victor, Winkler, Björn (2019) A new BaCa(CO3)2 polymorph. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 75 (3) 291-300 doi:10.1107/s2052520619003238
Chuliá-Jordán, R., Santamaría-Pérez, D., González-Platas, J., Otero-de-la-Roza, A., Ruiz-Fuertes, J., Popescu, C. (2022) Phase stability and dense polymorph of the BaCa(CO3)2 barytocalcite carbonate. Scientific Reports, 12 (1) doi:10.1038/s41598-022-11301-w(on a high-pressure polymorph)
Localities for BarytocalciteHide
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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.