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|Hardness:||3 - 4|
Classification of Petersite-(Y)
|IMA status:||Approved 1981|
|Strunz 8th edition ID:||7/D.53-10|
|Nickel-Strunz 10th (pending) edition ID:||8.DL.15|
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
|Dana 8th edition ID:||184.108.40.206|
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)7(XO4)3Zq·xH2O
|Hey's CIM Ref.:||19.4.10|
19 : Phosphates
4 : Phosphates of Ca
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Type Occurrence of Petersite-(Y)
|Type Locality:||Laurel Hill (Snake Hill; Penitentiary Quarry), Secaucus, Hudson Co., New Jersey, USA|
Physical Properties of Petersite-(Y)
|Hardness (Mohs):||3 - 4|
Crystallography of Petersite-(Y)
Optical Data of Petersite-(Y)
|RI values:||nω = 1.666 nε = 1.747|
|Maximum Birefringence:||δ = 0.081|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Petersite-(Y)
|Essential elements:||Cu, H, O, P, Y|
|All elements listed in formula:||Ce, Cu, H, Nd, O, P, Y|
Relationship of Petersite-(Y) to other Species
|Member of:||Mixite Group|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Petersite-(Y)
|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 Petersite-(Y)
Peacor, D. R. & Dunn, P. J. (1982): Petersite, a REE and phosphate analog of mixite. American Mineralogst: 67: 1039-1042.
Olmi, F., Sabelli, C., Trosti Ferroni, R. (1991): A contribution to the crystal chemistry of mixite group minerals from Sardinia (Italy). Neues Jahrbuch für Mineralogie, Monatshefte, 1991, 487-499.
Internet Links for Petersite-(Y)
|Specimens:||The following Petersite-(Y) specimens are currently listed for sale on minfind.com.|
Localities for Petersite-(Y)
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.