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|Hardness:||5 - 6|
|Plumbogummite Group > Alunite Supergroup|
|Name:||After Dr. W. Florence, who made a preliminary chemical examination of the mineral, and the "-(La)" suffix in allusion to lanthanum being the dominant REE in the composition.|
This page provides mineralogical data about Florencite-(La).
Classification of Florencite-(La)
|Strunz 8th edition ID:||7/B.36-130|
|Nickel-Strunz 10th (pending) edition ID:||8.BL.13|
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
|Dana 8th edition ID:||184.108.40.206|
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
|Hey's CIM Ref.:||19.9.11|
19 : Phosphates
9 : Phosphates of rare earths and Sc
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Type Occurrence of Florencite-(La)
|Type Locality:||Shituru Mine, Likasi (Jadotville; Jadotstad), Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)|
Physical Properties of Florencite-(La)
|Hardness (Mohs):||5 - 6|
Optical Data of Florencite-(La)
|RI values:||nω = 1.694 nε = 1.701|
|Maximum Birefringence:||δ = 0.007|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Florencite-(La)
|Essential elements:||Al, H, La, O, P|
|All elements listed in formula:||Al, H, La, O, P|
Relationship of Florencite-(La) to other Species
|Member of:||Plumbogummite Group > Alunite Supergroup|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Florencite-(La)
|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 Florencite-(La)
Canadian Mineralogist: 18: 301-311.
American Mineralogist: 69: 566.
Neues Jahrbuch für Mineralogie, Monatshefte (1990): 227-231.
Internet Links for Florencite-(La)
Localities for Florencite-(La)
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.