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 ed.:

41.5.11.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)₂(XO₄)Z_q

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)

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference
Aflo-La	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Asf	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of Arsenoflorencite-(La)Hide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Orange–red to pink.

Streak:

Very pale pink.

Hardness:

3½ on Mohs scale

Hardness Data:

Estimated

Comment:

By analogy to other alunite super-group minerals.

Tenacity:

Brittle

Cleavage:

Imperfect/Fair
On {001}.

Parting:

None.

Fracture:

Irregular/Uneven

Density:

4.15(5) g/cm³ (Measured) 4.159 g/cm³ (Calculated)

Comment:

Calculated from the empirical formula and single-crystal unit-cell.

Optical Data of Arsenoflorencite-(La)Hide

Type:

Uniaxial (+)

RI values:

n_ω = 1.740(5) n_ε = 1.750(5)

Max Birefringence:

δ = 0.010

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

High

Pleochroism:

Non-pleochroic

Chemistry of Arsenoflorencite-(La)Hide

Mindat Formula:

LaAl₃(AsO₄)₂(OH)₆

Elements listed:

Al, As, H, La, O - search for minerals with similar chemistry

Crystallography of Arsenoflorencite-(La)Hide

Crystal System:

Trigonal

Class (H-M):

3m (3 2/m) - Hexagonal Scalenohedral

Space Group:

R3m

Setting:

R3m

Cell Parameters:

a = 7.0316(3) Å, c = 16.5151(8) Å

Ratio:

a:c = 1 : 2.349

Unit Cell V:

707.16 Å³ (Calculated from Unit Cell)

Morphology:

Rhombohedral, pseudocubic or tabular crystals. Forms include {001} and {102}.

Twinning:

None observed.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Pressure (GPa)	Temp (K)
0017090	Arsenoflorencite-(La)	Mills S J, Kartashov P M, Kampf A R, Raudsepp M (2010) Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation: description and crystal structure European Journal of Mineralogy 22 613-621	2010	Grubependity Lake cirque, Prepolar Ural, Komi Republic, Russia	0	293
0019918	Arsenoflorencite-(La)	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 76 975-985	2012	Grupendity Lake cirque, Komi Republic, Russia	1.6	293
0019919	Arsenoflorencite-(La)	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 76 975-985	2012	Grupendity Lake cirque, Komi Republic, Russia	3.6	293
0019920	Arsenoflorencite-(La)	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 76 975-985	2012	Grupendity Lake cirque, Komi Republic, Russia	5.7	293
0019921	Arsenoflorencite-(La)	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 76 975-985	2012	Grupendity Lake cirque, Komi Republic, Russia	7.4	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Arsenoflorencite-(La)'
loop_
_publ_author_name
'Mills S J'
'Kartashov P M'
'Kampf A R'
'Raudsepp M'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 22 
_journal_year 2010
_journal_page_first 613
_journal_page_last 621
_publ_section_title
;
 Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation:
 description and crystal structure
;
_database_code_amcsd 0017090
_chemical_compound_source 'Grubependity Lake cirque, Prepolar Ural, Komi Republic, Russia'
_chemical_formula_sum 'La Al3 As2 O14 H6'
_cell_length_a 7.0316
_cell_length_b 7.0316
_cell_length_c 16.5151
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 707.164
_exptl_crystal_density_diffrn      4.225
_symmetry_space_group_name_H-M 'R -3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,z'
  '2/3+x,1/3+x-y,1/3+z'
  '1/3+x,2/3+x-y,2/3+z'
  'y,x,-z'
  '2/3+y,1/3+x,1/3-z'
  '1/3+y,2/3+x,2/3-z'
  '-x+y,y,z'
  '2/3-x+y,1/3+y,1/3+z'
  '1/3-x+y,2/3+y,2/3+z'
  '-x,-x+y,-z'
  '2/3-x,1/3-x+y,1/3-z'
  '1/3-x,2/3-x+y,2/3-z'
  '-y,-x,z'
  '2/3-y,1/3-x,1/3+z'
  '1/3-y,2/3-x,2/3+z'
  'x-y,-y,-z'
  '2/3+x-y,1/3-y,1/3-z'
  '1/3+x-y,2/3-y,2/3-z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
La   0.00000   0.00000   0.00000   0.00728
Al   0.50000   0.00000   0.50000   0.00550
As   0.00000   0.00000   0.31492   0.00478
O1   0.00000   0.00000   0.58543   0.01130
O2   0.20482  -0.20482  -0.05460   0.01000
O3   0.12273  -0.12273   0.13701   0.00840
H   0.19400  -0.19400   0.12200   0.04800
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
La 0.00815 0.00815 0.00555 0.00408 0.00000 0.00000
Al 0.00570 0.00440 0.00600 0.00220 0.00004 0.00010
As 0.00472 0.00472 0.00488 0.00236 0.00000 0.00000
O1 0.01170 0.01170 0.01050 0.00590 0.00000 0.00000
O2 0.01170 0.01170 0.00900 0.00780 0.00050 0.00050
O3 0.00710 0.00710 0.01130 0.00370 0.00080 0.00080

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.982 Å	(100)
3.538 Å	(55)
1.914 Å	(38)
2.211 Å	(28)
5.755 Å	(27)
1.767 Å	(24)
2.179 Å	(19)

Comments:

Grubependity Lake cirque, Komi Republic, Russia. Data from Mills et al. (2010).

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites
Stage 7: Great Oxidation Event	<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]

Type Occurrence of Arsenoflorencite-(La)Hide

Type Locality:

ⓘ Grubependity Lake cirque, Grubependity Lake, Maldynyrd range (Maldy-nyrd range), Kozhim River Basin, Komi Republic, Russia

General Appearance of Type Material:

Orange–red to pink rhombohedral, pseudocubic or tabular crystals up to about 0.2 mm across, that are visually indistinguishable from andalusite.

Place of Conservation of Type Material:

Natural History Museum of Los Angeles County, Los Angeles, California, USA, number 62567 (cotype).
A.E. Fersman Mineralogical Museum, Moscow, Russia, number 3891/1 (cotype).

Geological Setting of Type Material:

In concretions with REE mineralisation found in a layer of schist resulting from the metamorphism of coarse-granular arkosic sandstones.

Associated Minerals at Type Locality:

Andalusite	Anorthite	Ardennite-(As)	Chernovite-(Y)	Clinochlore
Hematite	Monazite Supergroup	Quartz	Sericite	Sillimanite
Zircon

Synonyms of Arsenoflorencite-(La)Hide

IMA2009-078

Arsenoflorencite (in part)

Other Language Names for Arsenoflorencite-(La)Hide

German:Arsenoflorencit-(La)

Relationship of Arsenoflorencite-(La) to other SpeciesHide

Member of:

Dussertite Group > Alunite Supergroup

Other Members of this group:

Arsenocrandallite	CaAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m)
Arsenoflorencite-(Ce)	CeAl₃(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
Arsenoflorencite-(Nd)	NdAl₃(AsO₄)₂(OH)₆	Trig.
Arsenogorceixite	BaAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
Arsenogoyazite	SrAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
Arsenowaylandite	BiAl₃(AsO₄)₂(OH)₆	Trig.
Dussertite	BaFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
Graulichite-(Ce)	CeFe³⁺₃(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
Graulichite-(La)	LaFe³⁺₃(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
Karlseifertite	Pb(Ga₂Ge)(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
Philipsbornite	PbAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
Segnitite	PbFe³⁺₃AsO₄(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Arsenoflorencite-(La) associated with Monazite-(La)	La(PO₄)
1 photo of Arsenoflorencite-(La) associated with Chernovite-(Y)	Y(AsO₄)

Related Minerals - Strunz-mindat Grouping Hide

8.BL.	Kiryuite	NaMnAl(PO₄)F₃	Mon. 2/m : P2₁/m
8.BL.	Metaheimite	PbCu₂(AsO₄)(OH)₃	Orth. mmm (2/m 2/m 2/m) : Pnma
8.BL.	Graulichite-(La)	LaFe³⁺₃(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.	Cloudite	BaFe³⁺₃(PO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.	Oberwolfachite	SrFe³⁺₃(AsO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	Gallobeudantite	PbGa₃(AsO₄)(SO₄)(OH)₆	Trig. 3m : R3m
8.BL.05	Slottaite	SrFe³⁺₃(PO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	Corkite	PbFe₃(PO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	Hidalgoite	PbAl₃(AsO₄)(SO₄)(OH)₆	Trig. 3m : R3m
8.BL.05	Hinsdalite	PbAl₃(PO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	UM2011-07-POSO:AlBaH	BaAl₃(PO₄)(SO₄)(OH)₆
8.BL.05	Kemmlitzite	SrAl₃(AsO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	Beudantite	PbFe₃(AsO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	Weilerite	BaAl₃(AsO₄)(SO₄)(OH)₆	Hex.
8.BL.05	Woodhouseite	CaAl₃(PO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.05	Svanbergite	SrAl₃(PO₄)(SO₄)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Segnitite	PbFe³⁺₃AsO₄(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Arsenogoyazite	SrAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Arsenogorceixite	BaAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Dussertite	BaFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Galloplumbogummite	Pb(Ga,Al,Ge)₃(PO₄)₂(OH)₆	Trig. 3m : R3m
8.BL.10	Stibiosegnitite	Pb(Fe³⁺_2.5Sb⁵⁺_0.5)(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10 va	Viséite
8.BL.10	Arsenocrandallite	CaAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m)
8.BL.10	Benauite	SrFe³⁺₃(PO₄)(PO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Philipsbornite	PbAl₃(AsO₄)(AsO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Crandallite	CaAl₃(PO₄)(PO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Springcreekite	BaV³⁺₃(PO₄)₂(OH,H₂O)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Eylettersite	Th_0.75Al₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Kintoreite	PbFe₃(PO₄)(PO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Plumbogummite	PbAl₃(PO₄)(PO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.10	Gorceixite	BaAl₃(PO₄)(PO₃OH)(OH)₆	Mon. m : Bm
8.BL.10	Goyazite	SrAl₃(PO₄)(PO₃OH)(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Florencite-(Ce)	CeAl₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Florencite-(La)	LaAl₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Florencite-(Nd)	NdAl₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Zaïrite	BiFe³⁺₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Arsenoflorencite-(Nd)	NdAl₃(AsO₄)₂(OH)₆	Trig.
8.BL.13	Unnamed (As-analogue of Zaïrite)	(Bi,Pb)Fe³⁺₃(AsO₄)₂(OH)₆
8.BL.13	Arsenoflorencite-(Ce)	CeAl₃(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Graulichite-(Ce)	CeFe³⁺₃(AsO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Arsenowaylandite	BiAl₃(AsO₄)₂(OH)₆	Trig.
8.BL.13	Waylandite	BiAl₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.13	Florencite-(Sm)	SmAl₃(PO₄)₂(OH)₆	Trig. 3m (3 2/m) : R3m
8.BL.15	Viitaniemiite	Na(Ca,Mn²⁺)Al(PO₄)(F,OH)₃	Mon. 2/m : P2₁/m
8.BL.25	Pattersonite	PbFe³⁺₃(PO₄)₂(OH)₅ · H₂O	Tric. 1 : P1

Fluorescence of Arsenoflorencite-(La)Hide

In UV light:

Not fluorescent under unfiltered ultraviolet light. Some crystals, with elevated Nd levels, change from pink to deep marine-green.

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Arsenoflorencite-(La)Hide

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for Arsenoflorencite-(La)Hide

Reference List:

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

Bayliss, P., Kolitsch, U., Nickel, E. H., Pring, A. (2010) Alunite supergroup: recommended nomenclature. Mineralogical Magazine, 74 (5) 919-927 doi:10.1180/minmag.2010.074.5.919

Mills, Stuart J., Kartashov, Pavel M., Kampf, Anthony R., Raudsepp, Mati (2010) Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation: description and crystal structure. European Journal of Mineralogy, 22 (4) 613-621 doi:10.1127/0935-1221/2010/0022-2043

Poirier, G., Tait, K. T., Rowe, R. (2011) New Mineral Names. American Mineralogist, 96 (5) 936-945 doi:10.2138/am.2011.576

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.

(2023) Arsenoflorencite-(La) Handbook of Mineralogy. Mineralogical Society of America

Localities for Arsenoflorencite-(La)Hide

This 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.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Czech Republic
Liberec Region Česká Lípa District Ralsko Holičky ⓘ Holičky deposit	Scharm (1991)
ⓘ Stráž pod Ralskem	Scharm et al. (1991)
ⓘ North Bohemian Uranium District	Scharm et al. (1991)

Germany
Thuringia Nordhausen District Harztor Ilfeld ⓘ Manganese deposit	Gröbner et al. (2011)

Russia (TL)
Komi Republic Kozhim River Basin Maldynyrd range (Maldy-nyrd range) Grubependity Lake ⓘ Grubependity Lake cirque (TL)	IMA proposals approved January 2010

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Arsenoflorencite-(La)

About Arsenoflorencite-(La)Hide

Unique IdentifiersHide

IMA Classification of Arsenoflorencite-(La)Hide

Classification of Arsenoflorencite-(La)Hide