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|Name:||To honor Vannoccio Biringuccio (1480–1538/9), Italian alchemist, metallurgist, politician, mine manager and foundryman; author of the Pirotechnia, his manual on metalworking, published in 1540. He is considered by some as the father of the foundry industry as De la pirotechnia is the first written account of proper foundry practice. He was in charge of casting cannons for Venice and later Florence. In 1536, he was offered a position in Rome by the Catholic Church, and in 1538 he became head of the papal foundry, and director of munitions. He was a Senator of the city of Siena in January and February of 1531.|
This page provides mineralogical data about Biringuccite.
Classification of Biringuccite
|Strunz 8th edition ID:||5/K.03-20|
|Nickel-Strunz 10th (pending) edition ID:||6.EC.05|
6 : BORATES
E : Pentaborates
C : Phyllo-pentaborates
|Dana 8th edition ID:||188.8.131.52|
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
|Hey's CIM Ref.:||9.1.4|
9 : Borates
1 : Borates of the alkalis and boric acid
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Type Occurrence of Biringuccite
|Type Locality:||Larderello, Pomarance, Pisa Province, Tuscany, Italy|
|Year of Discovery:||1961|
Crystallography of Biringuccite
|Cell Parameters:||a = 11.19Å, b = 6.56Å, c = 20.76Å|
β = 93.89°
|Ratio:||a:b:c = 1.706 : 1 : 3.165|
|Unit Cell Volume:||V 1,520.41 Å³ (Calculated from Unit Cell)|
Optical Data of Biringuccite
|RI values:||nα = 1.496 nβ = 1.539 nγ = 1.557|
|2V:||Measured: 62° , Calculated: 64°|
|Maximum Birefringence:||δ = 0.061|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Biringuccite
|Simplified for copy/paste:||Na2B5O8(OH)·H2O|
|Essential elements:||B, H, Na, O|
|All elements listed in formula:||B, H, Na, O|
Relationship of Biringuccite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Biringuccite
|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 Biringuccite
American Mineralogist: 48: 709-711.
American Mineralogist: 59: 1005-1015.
Internet Links for Biringuccite
Localities for Biringuccite
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: Castro Verde, Beja District, PortugalFrom Rui Nunes, 1st Aug 2014 15:56:15