Named in honor of Stanislav Konstantinovich Filatov (Станислав Константинович Филатов) (6 August 1940 - ) Professor, Department of Crystallography, St. Petersburg State University, St Petersburg, Russia, for his contributions to high temperature crystal chemistry and crystal chemistry of exhalation minerals. He has authored/coauthored descriptions of about 40 new minerals.

Type Locality:

ⓘ Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Arsenate (V) analogue of orthoclase.

Chemically similar especially to wrightite and also to pharmacoalumite.

Unique IdentifiersHide

Mindat ID:

26577

Long-form identifier:

mindat:1:1:26577:3

IMA Classification of FilatoviteHide

IMA status:

Approved

IMA Formula:

K(Al,Zn²⁺)₂(As⁵⁺,Si)₂O₈

Approval year:

2002

First published:

2004

Type description reference:

[1]Vergasova, Lidiya P., Krivovichev, Sergey V., Britvin, Sergey N., Burns, Peter N., Ananiev, Vladimir V. (2004) Filatovite, K(Al,Zn)₂(As,Si)₂O₈, a new mineral species from the Tolbachik volcano, Kamchatka peninsula, Russia. European Journal of Mineralogy, 16 (3) 533-536 doi:10.1127/0935-1221/2004/0016-0533

Classification of FilatoviteHide

Strunz-mindat (2026):

8.AC.85

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H₂O
C : With medium-sized and large cations

Mineral SymbolsHide

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

Symbol	Source	Reference for Standard
Ftv	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of FilatoviteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Colourless

Streak:

White

Hardness:

5 - 6 on Mohs scale

Hardness Data:

Measured

Tenacity:

Brittle

Cleavage:

Distinct/Good
on {100}

Density:

2.92 g/cm³ (Calculated)

Optical Data of FilatoviteHide

Type:

Biaxial (-)

RI values:

n_α = 1.532(1) n_β = 1.535(1) n_γ = 1.537(1)

2V:

Measured: 60° (10), Calculated: 78°

Max. Birefringence:

δ = 0.005
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

Moderate

Chemistry of FilatoviteHide

Mindat Formula:

K(Al,Zn)₂(As,Si)₂O₈

Element Weights:

Element	% weight
As	40.400 %
O	34.509 %
Al	14.549 %
K	10.542 %

Calculated from ideal end-member formula.

Elements listed:

Al, As, K, O, Si, Zn - search for minerals with similar chemistry

Crystallography of FilatoviteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 8.772 Å, b = 13.37 Å, c = 14.69 Å
β = 115.944°

Ratio:

a:b:c = 0.656 : 1 : 1.099

Unit Cell V:

1549.1 Å³

Comment:

Space Group: I2/c.

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	Link	Year	Locality	Pressure (GPa)	Temp (K)
0007076	Filatovite	Filatov S K, Krivovichev S V, Burns P C, Vergasova L P (2004) Crystal structure of filatovite, K[(Al,Zn)2(As,Si)2O8], the first arsenate of the feldspar group European Journal of Mineralogy 16 537-543		2004		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Filatovite'
loop_
_publ_author_name
'Filatov S K'
'Krivovichev S V'
'Burns P C'
'Vergasova L P'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 16 
_journal_year 2004
_journal_page_first 537
_journal_page_last 543
_publ_section_title
;
 Crystal structure of filatovite, K[(Al,Zn)2(As,Si)2O8],
 the first arsenate of the feldspar group
;
_database_code_amcsd 0007076
_chemical_formula_sum '(K.9 Na.1) (As1.1 Si.9) (Al1.9 Zn.1) O8'
_cell_length_a 8.772
_cell_length_b 13.370
_cell_length_c 14.690
_cell_angle_alpha 90
_cell_angle_beta 115.944
_cell_angle_gamma 90
_cell_volume 1549.240
_exptl_crystal_density_diffrn      2.838
_symmetry_space_group_name_H-M 'I 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
K   0.28451   0.00038   0.06940   0.90000   0.04650
Na   0.28451   0.00038   0.06940   0.10000   0.04650
AsT1   0.00850   0.18364   0.10767   0.55000   0.01750
SiT1   0.00850   0.18364   0.10767   0.45000   0.01750
AlT2   0.00558   0.18560   0.61510   0.94000   0.02050
ZnT2   0.00558   0.18560   0.61510   0.06000   0.02050
AlT3   0.71009   0.12077   0.17143   0.96000   0.02150
ZnT3   0.71009   0.12077   0.17143   0.04000   0.02150
AsT4   0.70229   0.11568   0.67225   0.55000   0.01770
SiT4   0.70229   0.11568   0.67225   0.45000   0.01770
O1   0.00460   0.14350   0.00100   1.00000   0.02920
O2   0.62990   0.99860   0.14180   1.00000   0.03450
O3   0.83400   0.14500   0.10760   1.00000   0.04480
O4   0.81600   0.14470   0.61310   1.00000   0.04060
O5   0.02530   0.30550   0.12040   1.00000   0.02970
O6   0.03360   0.31450   0.63450   1.00000   0.03050
O7   0.17510   0.13030   0.19700   1.00000   0.03510
O8   0.18390   0.12140   0.70480   1.00000   0.03110
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
K 0.02920 0.05670 0.04830 -0.00090 0.01220 -0.00100
Na 0.02920 0.05670 0.04830 -0.00090 0.01220 -0.00100
AsT1 0.01870 0.01890 0.01540 -0.00378 0.00783 -0.00119
SiT1 0.01870 0.01890 0.01540 -0.00378 0.00783 -0.00119
AlT2 0.02010 0.02360 0.01810 -0.00320 0.00850 -0.00140
ZnT2 0.02010 0.02360 0.01810 -0.00320 0.00850 -0.00140
AlT3 0.02070 0.01970 0.02290 -0.00090 0.00840 -0.00070
ZnT3 0.02070 0.01970 0.02290 -0.00090 0.00840 -0.00070
AsT4 0.01740 0.01540 0.01850 -0.00107 0.00627 -0.00060
SiT4 0.01740 0.01540 0.01850 -0.00107 0.00627 -0.00060
O1 0.03890 0.02920 0.02000 -0.00010 0.01340 -0.00310
O2 0.03030 0.02030 0.04180 0.00270 0.00560 0.00470
O3 0.03420 0.06200 0.04760 -0.01760 0.02640 -0.00690
O4 0.02900 0.06000 0.03770 -0.00800 0.01910 0.00060
O5 0.03120 0.02010 0.03520 -0.00360 0.01210 -0.00420
O6 0.02380 0.02410 0.03860 -0.00430 0.00910 -0.00460
O7 0.03590 0.03710 0.02110 0.00470 0.00230 0.00340
O8 0.03050 0.03540 0.02120 0.00510 0.00560 0.00080

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.664 Å	(100)
4.329 Å	(70)
3.897 Å	(70)
2.981 Å	(60)
3.300 Å	(50)

Locality:

Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

Reference:

Comments:

From type-description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
45a : [Sulfates, arsenates, selenates, antimonates]

Type Occurrence of FilatoviteHide

Type Locality:

ⓘ Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia

General Appearance of Type Material:

prismatic crystals to 0.3 mm

Place of Conservation of Type Material:

Museum of the Department of Mineralogy, St.Petersburg State University, St. Petersburg, Russia (catalogue # 1/19086)

Geological Setting of Type Material:

In pockets of fumarolic activity

Associated Minerals at Type Locality:

Alumoklyuchevskite	Hematite	Johillerite	Lammerite	Orthoclase
Sylvite	Tenorite

Reference:

Synonyms of FilatoviteHide

IMA2002-052

Other Language Names for FilatoviteHide

Dutch:Filatoviet

German:Filatovit

Russian:Филатовит

Simplified Chinese:费拉托夫石

Traditional Chinese:費拉托夫石

Relationship of Filatovite to other SpeciesHide

Member of:

Feldspar Group

Other Members of Feldspar Group:

Alkali Feldspar	A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
Buddingtonite	(NH₄)(AlSi₃O₈)	Mon. 2 : P2₁
Celsian	Ba(Al₂Si₂O₈)	Mon. 2/m
Hexacelsian	BaAl₂Si₂O₈	Hex. 6/mmm(6/m2/m2/m) : P6₃/mcm
Kokchetavite	K(AlSi₃O₈)	Hex. 6/mmm(6/m2/m2/m) : P6/mcc
Kumdykolite	Na(AlSi₃O₈)	Orth. mmm(2/m2/m2/m) : Pnnm
Paracelsian	Ba(Al₂Si₂O₈)	Mon. 2/m : P2₁/b
Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Reedmergnerite	NaBSi₃O₈	Tric. 1 : P1
Slawsonite	Sr(Al₂Si₂O₈)	Mon. 2/m : P2₁/b
Svyatoslavite	Ca(Al₂Si₂O₈)	Mon. 2 : P2₁
'Unnamed (New Ordered Member of the Alkali Feldspar Series)'	KNa(Si₆Al₂)O₁₆	Mon. m

Related Minerals - Strunz-mindat Grouping Hide

8.AC.	'Crocobelonite-1M'	CaFe³⁺₂O(PO₄)₂	Mon. 2/m : P2₁/m
8.AC.	Magnesioqingheiite	Na₂Mg(MgAl)(PO₄)₃	Mon. 2/m
8.AC.	Manganobadalovite	NaNaMn(MgFe³⁺)(AsO₄)₃	Mon. 2/m : B2/b
8.AC.	Changesite-(Y)	(Ca₈Y)◻Fe²⁺(PO₄)₇	Trig. 3m : R3c
8.AC.	Babunaite-(Nd)	NdAsO₄	Tet. 4/m : I4₁/a
8.AC.	Crocobelonite	CaFe³⁺₂O(PO₄)₂	Orth. mmm(2/m2/m2/m) : Pnma
8.AC.	Wopmayite	Ca₆Na₃◻Mn(PO₄)₃(PO₃OH)₄	Trig. 3m : R3c
8.AC.	Beershevaite	CaFe³⁺₃(PO₄)₃O	Mon. 2/m : P2₁/m
8.AC.	Epiebnerite	(NH₄)Zn(PO₄)	Mon. 2 : P2₁
8.AC.	Ebnerite	(NH₄)Zn(PO₄)	Hex. 6 : P6₃
8.AC.X	Dyrnaesite-(La)	Na₈Ce⁴⁺(La,REE)₂(PO₄)₆	Orth. mmm(2/m2/m2/m) : Pnma
8.AC.	Edtollite	K₂NaCu₅Fe³⁺O₂(AsO₄)₄	Tric. 1 : P1
8.AC.	Angarfite	NaFe³⁺₅(PO₄)₄(OH)₄ · 4H₂O	Orth. 222 : C222₁
8.AC.	Kabalovite	Fe²⁺₃Fe³⁺₄(PO₄)₆	Tric. 1 : P1
8.AC.	Nazarchukite	Ca₂NiFe³⁺₂(PO₄)₄	Orth. mmm(2/m2/m2/m) : Pbca
8.AC.	Calciohatertite	NaNaCa(CaFe³⁺)(AsO₄)₃	Mon. 2/m : B2/b
8.AC.	Alumoedtollite	K₂NaCu₅AlO₂(AsO₄)₄	Tric. 1 : P1
8.AC.02	Grigorievite	Cu₃Fe³⁺₂Al₂(VO₄)₆	Tric. 1 : P1
8.AC.02	Koksharovite	CaMg₂Fe³⁺₄(VO₄)₆	Tric. 1 : P1
8.AC.02	Ziminaite	Fe³⁺ ₆ (VO₄)₆	Tric. 1 : P1
8.AC.05	Hatertite	Na₂(Ca,Na)(Fe³⁺,Cu)₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Erikapohlite	Cu₃(Zn,Cu,Mg)₄Ca₂(AsO₄)₆ · 2H₂O	Mon. 2/m : B2/m
8.AC.05	'Unnamed (Na-Mg Arsenate Hydroxyarsenate)'	NaMg₃(AsO₄)(AsO₃OH)₂	Mon. 2/m : B2/b
8.AC.05	'Unnamed (Na-Zn-H Arsenate Hydroxyarsenate)'	Na(Na_0.6Zn_0.4)Zn₂(H_0.6AsO₄)(AsO₃OH)₂	Mon. 2/m : B2/b
8.AC.05	Calciojohillerite	NaCaMg₃(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Magnesiohatertite	(Na,Ca)₂Ca(Mg,Fe³⁺)₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05 va	'Alluaudite-Na[]'	◻₄Na₄Mn²⁺₄Fe³⁺₈(PO₄)₁₂	Mon. 2/m : B2/b
8.AC.05 va	'Alluaudite-Ca[]'	◻₄Ca₄Mn²⁺₄Fe³⁺₈(PO₄)₁₂	Mon. 2/m : B2/b
8.AC.05 va	'Ferroalluaudite-NaNa'	Na₄Na₄Fe²⁺₄Fe³⁺₈(PO₄)₁₂	Mon. 2/m : B2/m
8.AC.05	'Hagendorfite-NaNa'	NaNaFe²⁺(Mn²⁺,Mn³⁺)(PO₄)₃ (?)	Mon. 2/m : B2/b
8.AC.05	O'Danielite	Na(Zn,Mg)₃(AsO₄)(AsO₃OH)₂	Mon. 2/m : B2/b
8.AC.05	Howardevansite	NaCuFe₂(VO₄)₃	Tric. 1 : P1
8.AC.05	Khrenovite	Na₃Fe³⁺₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Zincobradaczekite	NaZn₂Cu₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Paraberzeliite	NaCa₂Mg₂(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Badalovite	Na₂Mg₂Fe(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Magnesiocanutite	NaMnMg₂[AsO₄]₂[AsO₂(OH)₂]	Mon. 2/m : B2/b
8.AC.05	Manganohatertite	NaNaCa(MnFe³⁺)(AsO₄)₃	Mon. 2/m : B2/b
8.AC.05	Camanchacaite	NaCaMg₂[AsO₄][AsO₃(OH)]₂	Mon. 2/m : B2/b
8.AC.07	Zhanghuifenite	Na₃Mn₄Mg₂Al(PO₄)₆	Mon. 2/m
8.AC.07	Ferrobobfergusonite	Na₂Fe²⁺₅Fe³⁺Al(PO₄)₆	Mon.
8.AC.10	Hagendorfite	NaCaMn²⁺Fe²⁺₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	'Ferrohagendorfite'	NaCaFe²⁺Fe²⁺₂(PO₄)₃	Mon.
8.AC.10	Johillerite	Na(Mg,Zn)₃Cu(AsO₄)₃	Mon. 2/m : B2/b
8.AC.10	Varulite	NaCaMn²⁺Mn²⁺₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	Nickenichite	Na_0.8Ca_0.4Cu_0.4(Mg,Fe)₃(AsO₄)₃	Mon. 2/m : B2/b
8.AC.10	Arseniopleite	NaCaMnMn₂(AsO₄)₃	Mon. 2/m
8.AC.10	Groatite	NaCaMn₂(PO₄)[PO₃(OH)]₂	Mon. 2/m : B2/b
8.AC.10	Alluaudite	(Na,Ca)Mn²⁺(Fe³⁺,Mn²⁺,Fe²⁺,Mg)₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	Bradaczekite	NaCu₄(AsO₄)₃	Mon. 2/m : B2/b
8.AC.10	Caryinite	(Na,Pb)(Ca,Na)CaMn²⁺₂(AsO₄)₃	Mon. 2/m
8.AC.10	Ferroalluaudite	(Na,Ca)Fe²⁺(Fe³⁺,Mn²⁺,Fe²⁺)₂(PO₄)₃	Mon. 2/m : B2/b
8.AC.10	Maghagendorfite	(Na,◻)MgMn²⁺(Fe²⁺,Fe³⁺)₂(PO₄)₃	Mon. 2/m
8.AC.15	Ferrowyllieite	(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO₄)₃	Mon. 2/m : P2₁/b
8.AC.15	Qingheiite	NaNaMn²⁺(MgAl)(PO₄)₃	Mon. 2/m : P2₁/b
8.AC.15	Rosemaryite	(Na,Ca,Mn)(Mn,Fe²⁺)(Fe³⁺,Mg)Al(PO₄)₃	Mon. 2/m : P2₁/b
8.AC.15	Ferroqingheiite	NaNaFe²⁺(MgAl)(PO₄)₃	Mon. 2/m : P2₁/m
8.AC.15	Ferrorosemaryite	◻NaFe²⁺Fe³⁺Al(PO₄)₃	Mon. 2/m
8.AC.15	Bobfergusonite	Na₂Mn₅FeAl(PO₄)₆	Mon. 2/m : P2/b
8.AC.15	Wyllieite	(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO₄)₃	Mon. 2/m
8.AC.17	Czochralskiite	Na₄Ca₃Mg(PO₄)₄	Orth. mmm(2/m2/m2/m) : Pnma
8.AC.18	Manitobaite	Na₁₆Mn²⁺ ₂₅Al₈(PO₄)₃₀	Mon. m : Pb
8.AC.20	Marićite	NaFe²⁺(PO₄)	Orth. mmm(2/m2/m2/m) : Pmna
8.AC.25	Schäferite	(NaCa₂)Mg₂(VO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.25	Berzeliite	(NaCa₂)Mg₂(AsO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.25	Matyhite	Ca₁₈(Ca,◻)₂Fe²⁺₂(PO₄)₁₄	Trig. 3m : R3c
8.AC.25	Hedegaardite	(Ca,Na)₉(Ca,Na)Mg(PO₄)₆(PO₃OH)	Trig. 3m : R3c
8.AC.25	Manganberzeliite	(NaCa₂)Mn²⁺₂(AsO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.25	Palenzonaite	(NaCa₂)Mn²⁺₂(VO₄)₃	Iso. m3m(4/m32/m) : Ia3d
8.AC.30	Brianite	Na₂CaMg(PO₄)₂	Mon. 2/m : P2₁/b
8.AC.35	Vitusite-(Ce)	Na₃(Ce,La,Nd)(PO₄)₂	Orth. mm2 : Pca2₁
8.AC.40	Bario-olgite	(Ba,Sr)(Na,Sr,REE)₂Na(PO₄)₂ ·	Trig. 3 : P3
8.AC.40	Olgite	(Sr,Ba)(Na,Sr,REE)₂Na(PO₄)₂	Trig. 3m(32/m) : P3m1
8.AC.45	Magnesiochangesite-(Ce)	(Ca₈Ce)◻Mg(PO₄)₇	Trig. 3m : R3c
8.AC.45	Tuite	Ca₃(PO₄)₂	Trig. 3m(32/m) : R3m
8.AC.45	Ferromerrillite	Ca₉NaFe²⁺(PO₄)₇	Trig. 3m : R3c
8.AC.45	Strontiowhitlockite	Sr₉Mg(PO₄)₆(PO₃OH)	Trig. 3m : R3c
8.AC.45	Magnesiochangesite-(Y)	(Ca₈Y)◻ Mg(PO₄)₇	Trig. 3m : R3m
8.AC.45	Changesite-(Ce)	(Ca₈Ce)◻Fe²⁺(PO₄)₇	Trig. 3m : R3c
8.AC.45	Merrillite	Ca₉NaMg(PO₄)₇	Trig. 3m : R3m
8.AC.45	Whitlockite	Ca₉Mg(PO₄)₆(PO₃OH)	Trig. 3m : R3c
8.AC.47	Iwateite	Na₂BaMn(PO₄)₂	Trig. 3 : P3
8.AC.47	Ozerovaite	Na₂KAl₃(AsO₄)₄	Orth. mmm(2/m2/m2/m) : Cmca
8.AC.47	Yurmarinite	Na₇(Fe³⁺,Mg,Cu)₄(AsO₄)₆	Trig. 3m(32/m) : R3c
8.AC.47	Pansnerite	K₃Na₃(Fe³⁺,Al)₆(AsO₄)₈	Orth. mmm(2/m2/m2/m)
8.AC.47	Anatolyite	Na₆(Ca,Na)(Mg,Fe³⁺)₃Al(AsO₄)₆	Trig. 3m(32/m) : R3c
8.AC.50	Fillowite	Na₃CaMn²⁺₁₁(PO₄)₉	Trig. 3 : R3
8.AC.50	Galileiite	Na₃Fe²⁺Fe²⁺₁₁(PO₄)₉	Trig. 3 : R3
8.AC.50	Johnsomervilleite	Na₃CaFe₁₁(PO₄)₉	Trig. 3 : R3
8.AC.50	Xenophyllite	Na₄Fe²⁺₇(PO₄)₆	Tric. 1 : P1
8.AC.50	Udinaite	NaMg₄(VO₄)₃	Tet. 42m : I42d
8.AC.50	Arsenudinaite	NaMg₄(AsO₄)₃	Tet. 42m : I42d
8.AC.50	Chladniite	Na₃CaMg₁₁(PO₄)₉	Trig. 3 : R3
8.AC.52	Lasnierite	(Ca,Sr)(Mg,Fe²⁺)₂Al(P[O,F]₄)₃	Orth. mmm(2/m2/m2/m) : Pbcn
8.AC.55	Pharmazincite	KZnAsO₄	Hex. 6 : P6₃
8.AC.57	Zubkovaite	Ca₃Cu₃(AsO₄)₄	Mon. 2 : B2
8.AC.60	Kosnarite	KZr₂(PO₄)₃	Trig. 3m(32/m) : R3c
8.AC.65	Panethite	(Na,Ca)₂(Mg,Fe²⁺)₂(PO₄)₂	Mon. 2/m : P2₁/b
8.AC.70	Stanfieldite	Ca₄Mg₅(PO₄)₆	Mon.
8.AC.75	Ronneburgite	K₂MnV₄O₁₂	Mon. 2/m
8.AC.80	Tillmannsite	Ag₃Hg[(V,As)O₄]	Tet. 4 : I4

RadioactivityHide

Radioactivity:

Element	% Content	Activity (Bq/kg)	Radiation Type
Uranium (U)	0.0000%	0	α, β, γ
Thorium (Th)	0.0000%	0	α, β, γ
Potassium (K)	10.5415%	3,268	β, γ

For comparison:

Banana: ~15 Bq per fruit
Granite: 1,000–3,000 Bq/kg
EU exemption limit: 10,000 Bq/kg

Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.

Interactive Simulator:

Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!

Mass of radioactive mineral:

Shielding material:

Activity: –

Distance	Dose rate	Risk
1 cm
10 cm
1 m

The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μ_shield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).

D = ((A_U × Γ_U) + (A_Th × Γ_Th) + (A_K × Γ_K)) / r² × μ_shield

Fluorescence of FilatoviteHide

In UV light:

none

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 FilatoviteHide

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https://www.mindat.org/min-26577.html
Please feel free to link to this page.

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External Links:

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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

Mineral Dealers:

Buy from D. Joyce minerals

References for FilatoviteHide

Reference List:

Vergasova, Lidiya P., Krivovichev, Sergey V., Britvin, Sergey N., Burns, Peter N., Ananiev, Vladimir V. (2004) Filatovite, K(Al,Zn)₂(As,Si)₂O₈, a new mineral species from the Tolbachik volcano, Kamchatka peninsula, Russia. European Journal of Mineralogy, 16 (3) 533-536 doi:10.1127/0935-1221/2004/0016-0533

Filatov, Stanislav K., Krivovichev, Sergey V., Burns, Peter C., Vergasova, Lidiya P. (2004) Crystal structure of filatovite, K(Al,Zn)2(As,Si)2O8, the first arsenate of the feldspar group. European Journal of Mineralogy, 16 (3) 537-543 doi:10.1127/0935-1221/2004/0016-0537

(2013) Filatovite. Handbook of Mineralogy. Mineralogical Society of America

[1]Krivovichev, S. V. (2015). Stanislav Konstantinovich Filatov: Life, crystal chemistry and crystal chemistry of borates. Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B, 56(1), 36-45.

Gorelova, Liudmila A., Vereshchagin, Oleg S., Bocharov, Vladimir N., Potekhina (née Shchipalkina), Nadezhda V., Zhitova, Elena S., Pekov, Igor V. (2024) Thermal behaviour of filatovite – a rare aluminoarsenate mineral of the feldspar group. Mineralogical Magazine, 88 (2) 176-184 doi:10.1180/mgm.2024.10

Localities for FilatoviteHide

Showing 1 localities.

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.

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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.

Russia (TL)

Kamchatka Krai

Milkovsky District

Tolbachik Volcanic field

Great Fissure eruption (Main Fracture)

Northern Breakthrough (North Breach)

ⓘ Second scoria cone (TL)

Vergasova et al. (2004)

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Filatovite

About FilatoviteHide