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|Lustre:||Vitreous||Hardness:||5 - 5½|
|Name:||Named in allusion to its composition, containing BARIum, its structure, having ORTHOrhombic symmetry, and its membership in the joaquinite group.|
This page provides mineralogical data about Bario-orthojoaquinite.
Classification of Bario-orthojoaquinite
|Strunz 8th edition ID:||8/E.08-70|
|Nickel-Strunz 10th (pending) edition ID:||9.CE.25|
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
|Dana 8th edition ID:||60.1.1b.3|
60 : CYCLOSILICATES Four-Membered Rings
1 : Four-Membered Rings, as Titanosilicates
|Hey's CIM Ref.:||14.9.15|
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
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Type Occurrence of Bario-orthojoaquinite
|Type Locality:||California State Gem Mine (Dallas Gem Mine; Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA|
|Year of Discovery:||1982|
Physical Properties of Bario-orthojoaquinite
|Hardness (Mohs):||5 - 5½|
Crystallography of Bario-orthojoaquinite
|Cell Parameters:||a = 10.47Å, b = 9.59Å, c = 22.59Å|
|Ratio:||a:b:c = 1.092 : 1 : 2.356|
|Unit Cell Volume:||V 2,268.20 Å³ (Calculated from Unit Cell)|
Optical Data of Bario-orthojoaquinite
|RI values:||nα = 1.735 nβ = 1.737 nγ = 1.800|
|2V:||Measured: 10° to 15°, Calculated: 22°|
|Maximum Birefringence:||δ = 0.065|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Dispersion:||r > v|
Chemical Properties of Bario-orthojoaquinite
|Simplified for copy/paste:||(Ba,Sr)4Fe2Ti2[Si4O12]2O2·H2O|
|Essential elements:||Ba, Fe, H, O, Si, Ti|
|All elements listed in formula:||Ba, Fe, H, O, Si, Sr, Ti|
Relationship of Bario-orthojoaquinite to other Species
|Member of:||Joaquinite Group|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Bario-orthojoaquinite
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Bario-orthojoaquinite
American Mineralogist: 67: 809-816.
Internet Links for Bario-orthojoaquinite
Localities for Bario-orthojoaquinite
The 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.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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Locality Updated: Ibitira meteorite, Ibitira, Martinho Campos, Minas Gerais, BrazilFrom Lon Clay Hill, 31st Jul 2014 01:29:55