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Arsenoflorencite-(La)

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Formula:
(La,Ce,Nd)(Al,Fe
3+
 
)
 
3
(AsO
 
4
,PO
 
4
)
 
2
(OH)
 
6
System:TrigonalHardness:
Member of:Dussertite Group > Alunite Supergroup



Originally reported without approval from North Bohemian Uranium District, Liberec Region, Bohemia (Böhmen; Boehmen), Czech Republic.

Classification of Arsenoflorencite-(La)

IMA status:Approved 2010
Strunz 8th edition ID:7/B.36-135
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:41.5.11.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
Hey's CIM Ref.:20.4.8

20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
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Type Occurrence of Arsenoflorencite-(La)

Type Locality:Grubependity Lake cirque, Grubependity Lake, Maldynyrd (Maldy-nyrd) range, Kozhim River Basin, Prepolar Ural, Komi Republic, Northern Region, Russia

Physical Properties of Arsenoflorencite-(La)

Hardness (Mohs):

Crystallography of Arsenoflorencite-(La)

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:R3m {R3 2/m}
Space Group Setting:R3m
Cell Parameters:a = 7.0316(3) Å, c = 16.5151(8) Å
Ratio:a:c = 1 : 2.349
Unit Cell Volume:V 707.16 ų (Calculated from Unit Cell)

Optical Data of Arsenoflorencite-(La)

Type:Uniaxial (+)
RI values: nω = 1.740 nε = 1.750
Maximum Birefringence:δ = 0.010

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Arsenoflorencite-(La)

Formula:
(La,Ce,Nd)(Al,Fe
3+
 
)
 
3
(AsO
 
4
,PO
 
4
)
 
2
(OH)
 
6
Simplified for copy/paste:(La,Ce,Nd)(Al,Fe3+)3(AsO4,PO4)2(OH)6
Idealised Formula:
LaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
Essential elements:Al, As, H, La, O
All elements listed in formula:Al, As, Ce, Fe, H, La, Nd, O, P

Relationship of Arsenoflorencite-(La) to other Species

Member of:Dussertite Group > Alunite Supergroup
Other Members of Group:

- +
Arsenocrandallite
CaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
Arsenoflorencite-(Ce)
CeAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
Arsenoflorencite-(Nd)
NdAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
Arsenogorceixite
BaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
Arsenogoyazite
SrAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
Arsenowaylandite
BiAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
Dussertite
BaFe
3+
3
(AsO
 
4
)
 
2
(OH)
 
5
Graulichite-(Ce)
CeFe
3+
3
(AsO
 
4
)
 
2
(OH)
 
6
Philipsbornite
PbAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
Segnitite
PbFe
3+
3
(AsO
 
4
)
 
2
(OH,H
 
2
O)
 
6
Related Minerals - Nickel-Strunz Grouping):

- +
8.BL.05Beudantite
PbFe
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Corkite
PbFe
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Hidalgoite
PbAl
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Hinsdalite
PbAl
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Kemmlitzite
(Sr,Ce)Al
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Svanbergite
SrAl
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Woodhouseite
CaAl
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.05Gallobeudantite
PbGa
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
8.BL.10Arsenogoyazite
SrAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Arsenogorceixite
BaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Arsenocrandallite
CaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Benauite
SrFe
3+
3
(HPO
 
4
,PO
 
4
)
 
2
(OH)
 
6
8.BL.10Crandallite
CaAl
 
3
(PO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Dussertite
BaFe
3+
3
(AsO
 
4
)
 
2
(OH)
 
5
8.BL.10Eylettersite
(Th,Pb)Al
 
3
(PO
 
4
,SiO
 
4
)
 
2
(OH)
 
6
8.BL.10Gorceixite
BaAl
 
3
(PO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Goyazite
SrAl
 
3
(PO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Kintoreite
PbFe
 
3
(PO
 
4
)(PO
 
3
OH)(OH)
 
6
8.BL.10Philipsbornite
PbAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Plumbogummite
PbAl
 
3
(PO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
8.BL.10Segnitite
PbFe
3+
3
(AsO
 
4
)
 
2
(OH,H
 
2
O)
 
6
8.BL.10Springcreekite
BaV
3+
3
(PO
 
4
)
 
2
(OH,H
 
2
O)
 
6
8.BL.13Arsenoflorencite-(Nd)
NdAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
8.BL.13Arsenoflorencite-(Ce)
CeAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
8.BL.13Florencite-(Ce)
CeAl
 
3
(PO
 
4
)
 
2
(OH)
 
6
8.BL.13Florencite-(La)
LaAl
 
3
(PO
 
4
)
 
2
(OH)
 
6
8.BL.13Florencite-(Nd)
(Nd,La,Ce)Al
 
3
(PO
 
4
)
 
2
(OH)
 
6
8.BL.13Waylandite
BiAl
 
3
(PO
 
4
)
 
2
(OH)
 
6
8.BL.13Zaïrite
Bi(Fe
3+
 
,Al)
 
3
(PO
 
4
)
 
2
(OH)
 
6
8.BL.13Arsenowaylandite
BiAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
8.BL.13Graulichite-(Ce)
CeFe
3+
3
(AsO
 
4
)
 
2
(OH)
 
6
8.BL.13Florencite-(Sm)
(Sm,Nd)Al
 
3
(PO
 
4
)
 
2
(OH)
 
6
8.BL.15Viitaniemiite
Na(Ca,Mn
2+
 
)Al(PO
 
4
)(F,OH)
 
3
8.BL.25Pattersonite
PbFe
3+
3
(PO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.4.1Mansfieldite
AlAsO
 
4
· 2H
 
2
O
20.4.2Bulachite
Al
 
2
(AsO
 
4
)(OH)
 
3
· 3H
 
2
O
20.4.3Pharmacoalumite
KAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
· 6.5H
 
2
O
20.4.4Luetheite
Cu
 
2
Al
 
2
(AsO
 
4
)
 
2
(OH)
 
4
20.4.5Arsenogoyazite
SrAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
20.4.6Arsenocrandallite
CaAl
 
3
(AsO
 
4
)
 
2
(OH)
 
5
· H
 
2
O
20.4.7Arsenoflorencite-(Ce)
CeAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
20.4.9Arsenoflorencite-(Nd)
NdAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
20.4.10Gerdtremmelite
(Zn,Fe)(Al,Fe)
 
2
(AsO
 
4
)(OH)
 
5
20.4.11Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
20.4.12Chernovite-(Y)
Y(AsO
 
4
)
20.4.13Agardite-(Y)
(Y,Ca)Cu
 
6
(AsO
 
4
)
 
2
(AsO
 
4
,HAsO
 
4
)(OH)
 
6
· 3H
 
2
O
20.4.14Agardite-(La)
(La,Ce)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O
20.4.15Goudeyite
(Al,Y)Cu
 
6
(AsO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O
20.4.16Retzian-(Ce)
Mn
2+
2
Ce(AsO
 
4
)(OH)
 
4
20.4.17Retzian-(La)
(Mn
2+
 
,Mg)
 
2
(La,Ce,Nd)(AsO
 
4
)(OH)
 
4
20.4.18Retzian-(Nd)
Mn
2+
2
(Nd,Ce,La)(AsO
 
4
)(OH)
 
4

Other Names for Arsenoflorencite-(La)

Synonyms:
IMA2009-078
Other Languages:
German:Arsenoflorencit-(La)

Other Information

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 Arsenoflorencite-(La)

Reference List:

- +
Scharm, B., Scharmová, M., Sulovský, P. and Kühn, P. (1991): Philipsbornite, arsenoflorencite-(La), and arsenoflorencite-(Nd) from the uranium district in northern Bohemia, Czechoslovakia. Casopis mineral. geol. 36, 103-113.

Stuart J. Mills, Pavel M. Kartashov, Anthony R. Kampf, Mati Raudsepp (2010): Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation: description and crystal structure. Eur. J. Mineral, 22, 613–621.

Mills, S. J. & Nestola, F. (2012) Elasticity and high-pressure structure of arsenoflorencite-(La): insights into the high-pressure behaviour of the alunite supergroup. Mineralogical Magazine, 76(4), 975–985.

Internet Links for Arsenoflorencite-(La)

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  • Localities for Arsenoflorencite-(La)

    (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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Liberec Region
        • Česká Lípa (Böhmisch Leipa)
    Scharm et al. (1991)
        • Česká Lípa (Böhmische Leipa)
          • Stráž (Wartenberg)
    Scharm, B. et al. (1991)
    Scharm, B., Scharmová, M., Sulovský, P., Kühn, P. (1991): Philipsbornite, arsenoflorencite-(La), and arsenoflorencite-(Nd) from the uranium district in northern Bohemia, Czechoslovakia. Casopis mineral. geol. 36, 103-113.
    Germany
     
    • Thuringia
      • Harz
        • Nordhausen
          • Ilfeld
    J. Gröbner, U. Kolitsch and J. Wesiger (2011): New finds of vanadate and rare-earth minerals from the manganese mine Ilfeld, Harz. Mineralien-Welt 22 (1), 41-49. (in German)
    Russia
     
    • Northern Region
      • Komi Republic
        • Prepolar Ural
          • Kozhim River Basin
            • Maldynyrd (Maldy-nyrd) range
              • Grubependity Lake
    IMA proposals approved January 2010
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