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|Hardness:||5 - 5½|
|Name:||From the Greek μουάζειυ "to be solitary" in allusion to the rarity of its presence in the first known localities, plus "La" as the La-dominant member of the Monazite series.|
Classification of Monazite-(La)
|Strunz 8th edition ID:||7/A.15-10|
|Nickel-Strunz 10th (pending) edition ID:||8.AD.50|
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
|Dana 8th edition ID:||126.96.36.199|
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
|Hey's CIM Ref.:||19.9.4|
19 : Phosphates
9 : Phosphates of rare earths and Sc
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Type Occurrence of Monazite-(La)
|Type Locality:||Kounrad Massif, Balkhash (Balqash), Balkhash (Balqash; Karatas; Prebalkhashie) Region, Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan|
Physical Properties of Monazite-(La)
|Hardness (Mohs):||5 - 5½|
Optical Data of Monazite-(La)
|RI values:||nα = 1.770 - 1.800 nβ = 1.771 - 1.802 nγ = 1.830 - 1.850|
|2V:||Measured: 12° , Calculated: 12° to 24°|
|Maximum Birefringence:||δ = 0.060|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Surface Relief:||Very High|
Chemical Properties of Monazite-(La)
|Essential elements:||La, O, P|
|All elements listed in formula:||Ce, La, Nd, O, P|
Relationship of Monazite-(La) to other Species
|Member of:||Monazite Group|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Monazite-(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 Monazite-(La)
American Mineralogist (1966): 51: 152.
Internet Links for Monazite-(La)
Localities for Monazite-(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.
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Locality Updated: Catalão No. 2 mine, Ouvidor, Catalão I Carbonatite Complex, Goiás, BrazilFrom David Von Bargen, 24th May 2013 18:12:28