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Fluorcalciomicrolite

A valid IMA mineral species

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Photos of Fluorcalciomicrolite (15)Discuss Fluorcalciomicrolite

Fluorcalciomicrolite Gallery Search Photos of Fluorcalciomicrolite

Edit Fluorcalciomicrolite Add Synonym Edit CIF structures Clear Cache

Fluorcalciomicrolite

Harding Mine, Picuris District, Taos County, New Mexico, USA

Fluorcalciomicrolite

Maiò Valley, Monticello, San Vittore, Moesa Region, Grisons, Switzerland

Fluorcalciomicrolite

Urucum claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil

Fluorcalciomicrolite

Harding Mine, Picuris District, Taos County, New Mexico, USA

Fluorcalciomicrolite

Maiò Valley, Monticello, San Vittore, Moesa Region, Grisons, Switzerland

Fluorcalciomicrolite

Urucum claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil

Fluorcalciomicrolite

Harding Mine, Picuris District, Taos County, New Mexico, USA

Fluorcalciomicrolite

Maiò Valley, Monticello, San Vittore, Moesa Region, Grisons, Switzerland

Hide all sections | Show all sections

About FluorcalciomicroliteHide

Formula:

(Ca,Na)₂(Ta,Nb)₂O₆F

Colour:

Colourless

Lustre:

Adamantine, Resinous

Hardness:

4 - 5

Specific Gravity:

6.160 (Calculated)

Crystal System:

Isometric

Member of:

Microlite Group > Pyrochlore Supergroup

Name:

Named according to convention, for its dominant fluorine and calcium content, and for its relationship to other microlite group minerals.

Type Locality:

ⓘ Volta Grande mine (Mibra mine), Nazareno, Minas Gerais, Brazil

Unique combination of elements. The (Ca,Na)-analogue of fluornatromicrolite. The Ta analogue of fluorcalciopyrochlore.

Unique IdentifiersHide

Mindat ID:

40354

Long-form identifier:

mindat:1:1:40354:0

IMA Classification of FluorcalciomicroliteHide

IMA status:

Approved

IMA Formula:

(Ca,Na)₂Ta⁵⁺₂O₆F

Approval year:

2012

First published:

2013

Type description reference:

Andrade, M. B., Atencio, D., Persiano, A. I. C., Ellena, J. (2013) Fluorcalciomicrolite, (Ca,Na,☐)₂Ta₂O₆F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil. Mineralogical Magazine, 77 (7) 2989-2996 doi:10.1180/minmag.2013.077.7.08

Classification of FluorcalciomicroliteHide

Strunz-mindat (2026):

4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra

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
Fcmic	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 FluorcalciomicroliteHide

Lustre:

Adamantine, Resinous

Transparency:

Translucent

Colour:

Colourless

Streak:

White

Hardness:

4 - 5 on Mohs scale

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Conchoidal

Density:

6.160 g/cm³ (Calculated)

Optical Data of FluorcalciomicroliteHide

Type:

Isotropic

RI values:

n = 1.992

Surface Relief:

Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.

Focus:

In focus

Chemistry of FluorcalciomicroliteHide

Mindat Formula:

(Ca,Na)₂(Ta,Nb)₂O₆F

Element Weights:

Element	% weight
Ta	64.967 %
O	17.233 %
Ca	14.390 %
F	3.411 %

Calculated from ideal end-member formula.

Elements listed:

Ca, F, Na, Nb, O, Ta - search for minerals with similar chemistry

Common Impurities:

Na,Nb,OH

Crystallography of FluorcalciomicroliteHide

Crystal System:

Isometric

Class (H-M):

m3m(4/m32/m) - Hexoctahedral

Space Group:

Fd3m

Cell Parameters:

a = 10.4191(6) Å

Unit Cell V:

1131.07 Å³

Twinning:

Not 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	Link	Year	Locality	Pressure (GPa)	Temp (K)
0019993	Fluorcalciomicrolite	Andrade M B, Atencio D, Persiano A I C, Ellena J (2013) Fluorcalciomicrolite, (Ca,Na,_)2Ta2O6F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil Mineralogical Magazine 77 2989-2996		2013	Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Fluorcalciomicrolite'
loop_
_publ_author_name
'Andrade M B'
'Atencio D'
'Persiano A I C'
'Ellena J'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 77 
_journal_year 2013
_journal_page_first 2989
_journal_page_last 2996
_publ_section_title
;
 Fluorcalciomicrolite, (Ca,Na,_)2Ta2O6F, a new microlite-group mineral
 from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
;
_database_code_amcsd 0019993
_chemical_compound_source 'Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil'
_chemical_formula_sum 'Ca1.06 Na.82 (Ta1.79 Nb.21) O6.21 F.79 H.27'
_cell_length_a 10.4191
_cell_length_b 10.4191
_cell_length_c 10.4191
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1131.073
_exptl_crystal_density_diffrn      6.100
_symmetry_space_group_name_H-M 'F d -3 m'
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  '1/4-y,1/4-z,+x'
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  '3/4+x,1/4+y,1/2-z'
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  '1/4+x,1/4+y,-z'
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  '3/4-x,3/4-y,+z'
  '1/4-x,1/4-y,+z'
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  '-z,3/4+x,3/4+y'
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  '1/4-x,+z,1/4-y'
  '3/4-x,1/2+z,1/4-y'
  '3/4-x,+z,3/4-y'
  '1/4+z,1/2-y,3/4+x'
  '1/4+z,-y,1/4+x'
  '3/4+z,1/2-y,1/4+x'
  '3/4+z,-y,3/4+x'
  '1/4-y,1/2+x,3/4-z'
  '1/4-y,+x,1/4-z'
  '3/4-y,1/2+x,1/4-z'
  '3/4-y,+x,3/4-z'
  '1/4+x,1/2-z,3/4+y'
  '1/4+x,-z,1/4+y'
  '3/4+x,1/2-z,1/4+y'
  '3/4+x,-z,3/4+y'
  '1/4-z,1/2+y,3/4-x'
  '1/4-z,+y,1/4-x'
  '3/4-z,1/2+y,1/4-x'
  '3/4-z,+y,3/4-x'
  '1/4+y,1/2-x,3/4+z'
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  '3/4+y,1/2-x,1/4+z'
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  '1/4-x,3/4-z,1/2+y'
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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
CaA   0.00000   0.00000   0.50000   0.53000   0.01300
NaA   0.00000   0.00000   0.50000   0.41000   0.01300
TaB   0.00000   0.00000   0.00000   0.89500   0.00438
NbB   0.00000   0.00000   0.00000   0.10500   0.00438
OX   0.12500   0.12500   0.31830   0.99000   0.00870
O-HX   0.12500   0.12500   0.31830   0.01000   0.00870
FY   0.12500   0.12500   0.62500   0.79000   0.01210
O-HY   0.12500   0.12500   0.62500   0.21000   0.01210
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
CaA 0.01300 0.01300 0.01300 -0.00410 -0.00410 -0.00410
NaA 0.01300 0.01300 0.01300 -0.00410 -0.00410 -0.00410
TaB 0.00438 0.00438 0.00438 -0.00062 -0.00062 -0.00062
NbB 0.00438 0.00438 0.00438 -0.00062 -0.00062 -0.00062
OX 0.00820 0.00820 0.00970 0.00510 0.00000 0.00000
O-HX 0.00820 0.00820 0.00970 0.00510 0.00000 0.00000
FY 0.01210 0.01210 0.01210 0.00000 0.00000 0.00000
O-HY 0.01210 0.01210 0.01210 0.00000 0.00000 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
5.997 Å	(59)
3.138 Å	(83)
3.005 Å	(100)
2.602 Å	(29)
2.004 Å	(23)
1.841 Å	(23)
1.589 Å	(25)
1.504 Å	(24)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites

Geological Setting:

Harding pegmatite, New Mexico, USA

Type Occurrence of FluorcalciomicroliteHide

Type Locality:

ⓘ Volta Grande mine (Mibra mine), Nazareno, Minas Gerais, Brazil

General Appearance of Type Material:

Octahedral crystals up to 1.5 cm, sometimes modified by rhombododecahedral faces

Place of Conservation of Type Material:

In the collections of the Museu de Geociências, Instituto de Geociências, Universidade de São Paulo, São Paulo, Brazil, registration number DR731.

Empirical Formula of Type Material:

(Ca1.07Na0.81◻0.12)Σ2.00(Ta1.84Nb0.14Sn0.02)Σ2.00[O5.93(OH)0.07]Σ6.00[F0.79(OH)0.21]Σ1.00

Geological Setting of Type Material:

Accessory mineral in a pegmatite

Associated Minerals at Type Locality:

Albite	'Apatite'	Beryl	Bityite	Cassiterite
Epidote	Fluorite	Gahnite	Garnet Group	Hydrokenomicrolite
Lepidolite	Magnetite	Microcline	Monazite-(Ce)	Muscovite
Quartz	Spodumene	Tantalite-(Mn)	Tourmaline	Zircon

Reference:

Synonyms of FluorcalciomicroliteHide

IMA2012-036

Calciomicrolite (in part)

Other Language Names for FluorcalciomicroliteHide

Dutch:Fluorcalciomicroliet

German:Fluorcalciomikrolith

Varieties of FluorcalciomicroliteHide

Titan-uranoan Fluorcalciomicrolite

Most of specimens of former Tantalbetafite (of Kalita & Bykova) have turned out to be Ti- and U-bearing fluorcalciomicrolites.

Relationship of Fluorcalciomicrolite to other SpeciesHide

Member of:

Microlite Group > Pyrochlore Supergroup

Other Members of Microlite Group:

Fluornatromicrolite	(Na_1.5Bi_0.5)Ta₂O₆F	Iso. m3m(4/m32/m) : Fd3m
Hydrokenomicrolite	(◻,H₂O)₂Ta₂(O,OH)₆(H₂O)	Iso. m3m(4/m32/m)
'Hydromicrolite'	(H₂O,◻)₂Ta₂(O,OH)₆(H₂O)
Hydroxycalciomicrolite	Ca_1.5Ta₂O₆(OH)	Iso. 432 : P4₂32
Hydroxykenomicrolite	(◻,Na,Sb³⁺)₂Ta₂O₆(OH,Cs)	Iso. m3m(4/m32/m) : Fd3m
'Hydroxylstibiomicrolite'	(Sb,Ca,Na)₂(Ta,Nb)₂O₆(OH)	Iso.
'Hydroxynatromicrolite'	(Na,Bi³⁺,◻)₂Ta₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
Kenomicrolite	◻₂Ta₂[O₄(OH)₂]◻	Iso. m3m(4/m32/m) : Fd3m
Kenoplumbomicrolite	(Pb,◻)₂Ta₂O₆(◻,OH,O)	Iso. m3m(4/m32/m) : Fd3m
Oxybismutomicrolite	(Bi_1.33◻_0.67)_Σ2Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
Oxycalciomicrolite	Ca₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
Oxystannomicrolite	Sn₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
Oxystibiomicrolite	(Sb³⁺,Ca)₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
'Uranmicrolite (of Hogarth 1977)'	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇	Iso.
'Yttromicrolite (of Hogarth)'	(Ca,Y³⁺,U,Na)_2-x(Ta,Nb,Ti,Fe³⁺)₂O₇	Iso. m3m(4/m32/m) : Fd3m

Common AssociatesHide

Associations Based on Photo Data:

6 photos of Fluorcalciomicrolite associated with Lepidolite
3 photos of Fluorcalciomicrolite associated with 'Cleavelandite'	Na(AlSi₃O₈)
2 photos of Fluorcalciomicrolite associated with Spodumene	LiAlSi₂O₆
2 photos of Fluorcalciomicrolite associated with Quartz	SiO₂
2 photos of Fluorcalciomicrolite associated with Topaz	Al₂(SiO₄)(F,OH)₂
2 photos of Fluorcalciomicrolite associated with Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
1 photo of Fluorcalciomicrolite associated with Albite	Na(AlSi₃O₈)
1 photo of Fluorcalciomicrolite associated with Holmquistite	◻Li₂(Mg₃Al₂)(Si₈O₂₂)(OH)₂

Related Minerals - Strunz-mindat Grouping Hide

4.DH.	Cesiokenopyrochlore	◻Nb₂(O,OH)₆(Cs,◻)	Iso. m3m(4/m32/m) : Fd3m
4.DH.	Roméite Group	A₂(Sb⁵⁺)₂O₆Z
4.DH.	Oxyplumboroméite	Pb₂Sb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.	Fluornatropyrochlore	(Na,Pb,Ca,REE,U)₂Nb₂O₆F	Iso. m3m(4/m32/m)
4.DH.	Hydroxykenomicrolite	(◻,Na,Sb³⁺)₂Ta₂O₆(OH,Cs)	Iso. m3m(4/m32/m) : Fd3m
4.DH.	'Fluornatroroméite'	(Na,Ca)₂Sb₂(O,OH)₆F
4.DH.	Oxyyttrobetafite-(Y)	Y₂Ti₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.05	Thorutite	(Th,U,Ca)Ti₂(O,OH)₆	Mon.
4.DH.05	Orthobrannerite	U⁴⁺U⁶⁺Ti₄O₁₂(OH)₂	Orth.
4.DH.05	Brannerite	UTi₂O₆	Mon. 2/m : B2/m
4.DH.10	Kassite	CaTi₂O₄(OH)₂	Mon. 2/m : P2₁/c
4.DH.10	Lucasite-(La)		Mon. 2 : B2
4.DH.10	Lucasite-(Ce)	CeTi₂(O,OH)₆	Mon.
4.DH.15	'Fluorhydropyrochlore'
4.DH.15	Hydrokenoelsmoreite	◻₂W₂O₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Hydroxynatromicrolite'	(Na,Bi³⁺,◻)₂Ta₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydroplumboelsmoreite	(Pb,◻)(W,Fe³⁺)₂O₆ · H₂O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydropyrochlore	(H₂O,◻)₂Nb₂(O,OH)₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)'	(Mn,Ca,Y)₂(Sb,Ti)₂O₆(OH)
4.DH.15	Hydroxynatropyrochlore	(Na,Ca,Ce)₂Nb₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydrokenopyrochlore	(◻,x)₂Nb₂O₆(H₂O,Cs)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxybismutomicrolite	(Bi_1.33◻_0.67)_Σ2Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Kenomicrolite	◻₂Ta₂[O₄(OH)₂]◻	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Fluornatromicrolite	(Na_1.5Bi_0.5)Ta₂O₆F	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Oxynatropyrochlore'	(Na,Ca,U)₂Nb₂O₆(O,OH)
4.DH.15	Hydroxycalciopyrochlore	(Ca,Na,U,◻)₂(Nb,Ti)₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Fluorcalciopyrochlore	(Ca,Na)₂(Nb,Ti)₂O₆F	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxycalciopyrochlore	Ca₂Nb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Fluorstrontiopyrochlore'	(Sr,◻)₂Nb₂(O,OH)₆F
4.DH.15	Oxyplumbopyrochlore	Pb₂Nb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Fluorplumbopyrochlore'	(Pb,Y,Th,U,Na,Ca)_2-x(Nb,Ti)₂O₆F	Iso.
4.DH.15	'Bismutomicrolite (of Hogarth 1977)'		Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Bismutopyrochlore (of Chukanov et al.)'	(Bi,Ca,U,Pb)_2-xNb₂(O,OH)₆(OH)	Amor.
4.DH.15	'Kenoplumbopyrochlore'	(Pb,◻)Nb₂O₆(◻,O)
4.DH.15	Hydroxyplumbopyrochlore	(Pb_1.5◻_0.5)Nb₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Stibiomicrolite (of Groat et al.)'
4.DH.15	'Oxyyttropyrochlore-(Y)'	(Y,◻)₂Nb₂O₆O
4.DH.15	'Fluorkenopyrochlore'	(◻,Sr,Ce,Ca,Na)₂(Nb,Ti)₂O₆F
4.DH.15	Hydroxycalciomicrolite	Ca_1.5Ta₂O₆(OH)	Iso. 432 : P4₂32
4.DH.15	'Strontiopyrochlore (of Hogarth 1977)'	(Sr,Ce,Ca)_0.66(Nb,Fe)₂(O,OH)₇
4.DH.15 va	'Alumotungstite'	◻₂W₂O₆(H₂O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Oxycalciobetafite'	Ca₂(Ti,Nb)₂O₆O
4.DH.15	'Oxyuranobetafite'	(U,Ca,◻)₂(Ti,Nb)₂O₆O
4.DH.15	Oxycalciomicrolite	Ca₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxystannomicrolite	Sn₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Kenoplumbomicrolite	(Pb,◻)₂Ta₂O₆(◻,OH,O)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxynatromicrolite	(Na,Ca,U)₂(Ta,Nb)₂O₆(O,F)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Oxystibiomicrolite	(Sb³⁺,Ca)₂Ta₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	'Hydromicrolite'	(H₂O,◻)₂Ta₂(O,OH)₆(H₂O)
4.DH.15	'Plumbomicrolite (of Hogarth 1977)'
4.DH.15	Hydrokenomicrolite	(◻,H₂O)₂Ta₂(O,OH)₆(H₂O)	Iso. m3m(4/m32/m)
4.DH.15	Hydroxykenoelsmoreite	(◻,Pb)₂(W,Fe³⁺,Al)₂(O,OH)₆(OH)	Trig. 3 : R3
4.DH.15 va	'Yttromicrolite (of Hogarth)'	(Ca,Y³⁺,U,Na)_2-x(Ta,Nb,Ti,Fe³⁺)₂O₇	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydroxykenopyrochlore	(◻,Ce,Ba)₂(Nb,Ti)₂O₆(OH,F)	Iso. m3m(4/m32/m) : Fd3m
4.DH.15	Hydroxymanganopyrochlore	(Mn²⁺,Th,Na,Ca,REE)₂(Nb,Ti)₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	'Cuproroméite'	Cu₂Sb₂(O,OH)₇	Iso.
4.DH.20	Hydroxycalcioroméite	(Ca,Sb³⁺)₂(Sb⁵⁺,Ti)₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Bindheimite	Pb₂Sb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Hydroxyferroroméite	(Fe²⁺_1.5◻_0.5)Sb⁵⁺₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Fluorcalcioroméite	(Ca,Na,◻)₂Sb⁵⁺₂(O,OH)₆F	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Oxycalcioroméite	Ca₂Sb₂O₆O	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Stetefeldtite	Ag₂Sb₂(O,OH)₇	Iso.
4.DH.20	Stibiconite	Sb³⁺Sb⁵⁺₂O₆(OH)	Iso. m3m(4/m32/m) : Fd3m
4.DH.20	Monimolite	Pb₂Sb⁵⁺₂O₇	Iso. m3m(4/m32/m)
4.DH.25	Rosiaite	PbSb⁵⁺₂O₆	Trig. 3m(32/m) : P31m
4.DH.30	Stefanweissite	(Ca,REE)₂Zr₂(Nb,Ti)(Ti,Nb)₂Fe²⁺O₁₄	Orth. mmm(2/m2/m2/m) : Cmca
4.DH.30	Zirconolite	CaZrTi₂O₇	Orth.
4.DH.30	Laachite	(Ca,Mn)₂Zr₂Nb₂TiFeO₁₄	Mon. 2/m : B2/b
4.DH.30	Nöggerathite-(Ce)	(Ce,Ca)₂Zr₂(Nb,Ti)(Ti,Nb)₂Fe²⁺O₁₄	Orth. mmm(2/m2/m2/m) : Cmca
4.DH.35	Liandratite	U(Nb,Ta)₂O₈	Trig. 3m(32/m) : P31m
4.DH.35	Petscheckite	UFe(Nb,Ta)₂O₈	Hex.
4.DH.40	Ingersonite	Ca₃Mn²⁺Sb⁵⁺₄O₁₄	Trig. 32 : P3₁21
4.DH.45	Pittongite	Na_0.22(W,Fe³⁺)(O,OH)₃ · 0.44H₂O	Hex. 6m2 : P6m2
4.DH.50	Tazzoliite	Ba_4-xNa_xTi₂Nb₃SiO₁₇[PO₂(OH)₂]_x(OH)_(1-2x)	Orth. mmm(2/m2/m2/m) : Fmmm

Fluorescence of FluorcalciomicroliteHide

In UV light:

none

Other InformationHide

IR Spectrum:

3600–3581 cm^–1, doublet (OH groups)

Notes:

Raman bands [cm^-1]: 168, 187, 792, 891 (not assigned); 292, 331, 417 (X–B–X bending modes); 505, 664
(B–X octahedral bond stretching)

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 FluorcalciomicroliteHide

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https://www.mindat.org/min-40354.html
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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 FluorcalciomicroliteHide

Reference List:

Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 14. Mineralogical Magazine, 76 (5) 1281-1288 doi:10.1180/minmag.2012.076.5.15

Christy, A. G., Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine, 77 (1) 13-20 doi:10.1180/minmag.2013.077.1.02

(2016) Fluorcalciomicrolite. Handbook of Mineralogy. Mineralogical Society of America

Localities for FluorcalciomicroliteHide

Showing 27 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.


Brazil
Minas Gerais Conselheiro Pena Barra do Cuieté ⓘ Urucum claim	RRUFF sample R070100 (ID confirmed by single-crystal X-ray diffraction)
Governador Valadares Golconda mining district ⓘ Ipê mine	Pavel M. Kartashov analytical data (2012)
Nazareno ⓘ Volta Grande mine (Mibra mine) (TL)	Williams et al. (2012) +1 other reference

Canada
Manitoba Red Cross Lake ⓘ Red Cross Lake pegmatites	Cerny et al. 2012 +1 other reference

China
Henan Sanmenxia Lushi County Guanpo Guanpo pegmatite field ⓘ Pegmatite vein no. 309	Fan G. et al. (2013)
Jiangxi Shangrao Hengfeng Co. Lingshan complex ⓘ Huangshan Nb-Ta deposit	Zhu et al. (2026)

Czech Republic
South Bohemian Region Český Krumlov District Nová Ves ⓘ Nová Ves pegmatite	Novák et al. (2013)

Eswatini
Lubombo Region Sinceni Mountain Sinceni pegmatite field Sinceni West area ⓘ Zishineni	Grew et al. (2018)

Finland
Kanta-Häme Forssa ⓘ Kiimassuo pegmatite	[var: Titan-uranoan Fluorcalciomicrolite] Pavel M. Kartashov analytical data
Pirkanmaa Orivesi Eräjärvi area ⓘ Viitaniemi pegmatite	Ilkka Mikkola collection

Hungary
Borsod-Abaúj-Zemplén County Miskolc District Bükkszentkereszt ⓘ Bagoly Hill	Gál P. (2014)

Italy
Piedmont Verbano-Cusio-Ossola Province Trontano ⓘ Rio Graia	Vignola et al. (2018)

Japan
Fukuoka Prefecture Fukuoka City ⓘ Nagatare (Nagatareyama; Nagatare mine)	Uehara et al. (2014)
Ibaraki Prefecture Hitachiota City ⓘ Myoukenyama	Matsubara et al. (2013)

Kazakhstan
East Kazakhstan Region Ulan District ⓘ Ognevka Ta deposit	Anatoly Kasatkin analitical data

Mozambique
Zambezia Province Gilé District Muiane-Naipa group ⓘ Muiâne pegmatite (Muiâne mine; Emdal mines)	RRUFF ID: R130022

Poland
Lower Silesian Voivodeship Dzierżoniów County Piława Górna DSS Piława Górna Quarry ⓘ Julianna pegmatite	Pieczka et al. (2018)

Russia
Murmansk Oblast Kovdorsky District ⓘ Kovdor Massif	Ivanyuk et al. (2018)

Slovakia
Bratislava Region Bratislava Bratislava IV Devín ⓘ Jezuitské Lesy	Chudík et al. (2011)
Trenčín Region Prievidza District Liešťany ⓘ Granitic pegmatite	Uher P. et al. (2020)

Switzerland
Grisons Moesa Region San Vittore Monticello ⓘ Maiò Valley	Stefan Wolsfried collection

USA
Maine Oxford County Paris ⓘ Mount Mica Quarry	Van King
Rumford ⓘ Black Mountain Quarry	Van King
New Mexico Taos County Picuris District ⓘ Harding Mine	New Mexico Geological Society ...
Virginia Amelia County ⓘ Amelia (Amelia Court House)	Palache et al. (1940)
ⓘ Rutherford Mines	Duresky et al. (2025)

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Fluorcalciomicrolite

About FluorcalciomicroliteHide

Unique IdentifiersHide

IMA Classification of FluorcalciomicroliteHide

Classification of FluorcalciomicroliteHide

Mineral SymbolsHide

Physical Properties of FluorcalciomicroliteHide

Optical Data of FluorcalciomicroliteHide

Chemistry of FluorcalciomicroliteHide

Crystallography of FluorcalciomicroliteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of FluorcalciomicroliteHide

Synonyms of FluorcalciomicroliteHide

Other Language Names for FluorcalciomicroliteHide

Varieties of FluorcalciomicroliteHide

Relationship of Fluorcalciomicrolite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of FluorcalciomicroliteHide

Other InformationHide

Internet Links for FluorcalciomicroliteHide

References for FluorcalciomicroliteHide

Localities for FluorcalciomicroliteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide