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Fluornatrocoulsellite

A valid IMA mineral species

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Photos of Fluornatrocoulsellite (11)

Fluornatrocoulsellite Gallery Search Photos of Fluornatrocoulsellite

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Fluornatrocoulsellite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Fluornatrocoulsellite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Fluornatrocoulsellite

Mt Cleveland Mine, Luina, Heazlewood district, Waratah-Wynyard municipality, Tasmania, Australia

Fluornatrocoulsellite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Fluornatrocoulsellite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Fluornatrocoulsellite

Mt Cleveland Mine, Luina, Heazlewood district, Waratah-Wynyard municipality, Tasmania, Australia

Fluornatrocoulsellite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

Fluornatrocoulsellite

Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy

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About FluornatrocoulselliteHide

Ruth E. Coulsell

Formula:

CaNa₃AlMg₃F₁₄

Colour:

Colorless

Lustre:

Vitreous

Hardness:

4½

Specific Gravity:

2.99

Crystal System:

Trigonal

Member of:

Coulsellite Group > Pyrochlore Supergroup

Name:

Originally named simply coulsellite in honor of Ruth Elise Coulsell (1912 – 2000), a foundation member and honorary life member of the Mineralogical Society of Victoria. Renamed to fluornatrocoulsellite by Atencio et al. (2017) according to the pyrochlore supergroup naming convention.

Type Locality:

ⓘ Mt Cleveland Mine, Luina, Heazlewood district, Waratah-Wynyard municipality, Tasmania, Australia

Originally named coulsellite, renamed fluornatrocoulsellite (IMA July 2016; Atencio et al., 2017).

A mineral in the Coulsellite Group of the Pyrochlore Supergroup.
Appears to be unique among published pyrochlore phases in having a 1:3 ordering of metal atoms Ca:Na in the A sites and Al:Mg in the B sites.

Related to hydrokenoralstonite.

Originally recognized as a Ca-bearing ralstonite-like mineral (UM199O-21-F:AlCaHMgNa) by Birch and Spring (1990). Subsequently fully characterized as a new species by Birch et al. (2009). The crystal structure was solved by Mumme et al. (2010).

Unique IdentifiersHide

Mindat ID:

39766

Long-form identifier:

mindat:1:1:39766:5

GUID
(UUID V4):

cf1cb78b-28f7-4b5e-a66b-6b96ad107856

IMA Classification of FluornatrocoulselliteHide

IMA status:

Approved

IMA status notes:

Renamed by the IMA

IMA Formula:

(Na_1.5Ca_0.5)(Mg_1.5Al_0.5)F₆F

Approval year:

2009

Approval history:

Renamed from coulsellite after being moved into the Pyrochlore Supergroup (IMA July 2016.)

Type description reference:

Birch W D, Grey I E, Mumme W G, Pring A (2009) Coulsellite, a new mineral from the Cleveland mine, Luina, Tasmania. Australian Journal of Mineralogy 15, 21-24

Classification of FluornatrocoulselliteHide

Strunz-mindat (2024):

3.00.

3 : HALIDES
0 :
0 :

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
Fnc	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 FluornatrocoulselliteHide

Lustre:

Vitreous

Transparency:

Transparent, Translucent

Colour:

Colorless

Streak:

White

Hardness:

4½ on Mohs scale

Hardness Data:

Estimated

Tenacity:

Brittle

Cleavage:

None Observed

Parting:

None observed

Fracture:

Conchoidal

Density:

2.99 g/cm³ (Measured) 3.011 g/cm³ (Calculated)

Optical Data of FluornatrocoulselliteHide

Type:

Uniaxial

Comments:

n(average) = 1.40. Pseudo-isotropic.

Chemistry of FluornatrocoulselliteHide

Mindat Formula:

CaNa₃AlMg₃F₁₄

Elements listed:

Al, Ca, F, Mg, Na - search for minerals with similar chemistry

Chemical AnalysisHide

wt%

	1
Al	5.93 %
Ca	8.41 %
Mg	14.9 %
Na	14.2 %
F	54.8 %
O	1.81 %
P	0.49 %
Total:	100.54 %

Empirical formulas:

Sample ID	Empirical Formula
1	Ca_0.98Na_2.88Al_1.03Mg_2.86P_0.07F_13.47(OH)0_.53

Sample references:

ID	Locality	Reference	Notes
1	Mt Cleveland Mine, Luina, Heazlewood district, Waratah-Wynyard municipality, Tasmania, Australia	Birch, W.D., Grey, I.E., Mumme, W.G., Pring, A. (2009) Coulsellite, a new mineral from the Cleveland mine, Luina, Tasmania. Australian Journal of Mineralogy: 15: 21-24	Electron microprobe

Crystallography of FluornatrocoulselliteHide

Crystal System:

Trigonal

Class (H-M):

3m (3 2/m) - Hexagonal Scalenohedral

Space Group:

R3m

Setting:

R3m

Cell Parameters:

a = 7.1756(1) Å
α = 59.867(1)°

Unit Cell V:

260.46 Å³ (Calculated from Unit Cell)

Morphology:

Pseudo-octahedral crystals, forming crusts.
Forms probably {00.1} and {12.1} for rhombohedral symmetry.

Twinning:

Multiply twinned about threefold axes of the pseudocubic cell.

Comment:

Corresponding hexagonal unit-cell parameters are a = 7.1620(1) Å, c = 17.5972(3) Å.

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)
0020643	Fluornatrocoulsellite	Mumme W G, Grey I E, Birch W D, Pring A, Bougerol C, Wilson N C (2010) Coulsellite, CaNa3AlMg3F14, a rhombohedral pyrochlore with 1:3 ordering in both A and B sites, from the Cleveland mine, Tasmania, Australia American Mineralogist 95 736-740		2010	Cleveland tin mine, Luina, western Tasmania	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Fluornatrocoulsellite'
loop_
_publ_author_name
'Mumme W G'
'Grey I E'
'Birch W D'
'Pring A'
'Bougerol C'
'Wilson N C'
_journal_name_full 'American Mineralogist'
_journal_volume 95 
_journal_year 2010
_journal_page_first 736
_journal_page_last 740
_publ_section_title
;
 Coulsellite, CaNa3AlMg3F14, a rhombohedral pyrochlore with 1:3 ordering
 in both A and B sites, from the Cleveland mine, Tasmania, Australia
;
_database_code_amcsd 0020643
_chemical_compound_source 'Cleveland tin mine, Luina, western Tasmania'
_chemical_formula_sum 'Ca Na3 Al Mg3 F14'
_cell_length_a 7.1756
_cell_length_b 7.1756
_cell_length_c 7.1756
_cell_angle_alpha 59.867
_cell_angle_beta 59.867
_cell_angle_gamma 59.867
_cell_volume 260.464
_exptl_crystal_density_diffrn      3.028
_symmetry_space_group_name_H-M 'R -3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-z,-y'
  '-z,-x,-y'
  'y,x,z'
  'y,z,x'
  '-z,-y,-x'
  '-x,-y,-z'
  'x,z,y'
  'z,x,y'
  '-y,-x,-z'
  '-y,-z,-x'
  'z,y,x'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ca   0.00000   0.00000   0.00000   0.01290
Na   0.50000   0.00000   0.00000   0.01940
Al   0.50000   0.50000   0.50000   0.00680
Mg   0.50000   0.50000   0.00000   0.00670
F1   0.17100   0.17100   0.57780   0.01180
F2   0.43710   0.43710   0.80070   0.01240
F3   0.12460   0.12460   0.12460   0.01170
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
Ca 0.01370 0.01370 0.01370 -0.00510 -0.00510 -0.00510
Na 0.00980 0.02510 0.02510 -0.00390 -0.00390 -0.01340
Al 0.00710 0.00710 0.00710 -0.00260 -0.00260 -0.00260
Mg 0.00680 0.00680 0.00560 -0.00230 -0.00170 -0.00170
F1 0.00940 0.00940 0.01450 -0.00060 -0.00450 -0.00450
F2 0.01540 0.01540 0.00860 -0.00550 -0.00450 -0.00450
F3 0.01160 0.01160 0.01160 -0.00380 -0.00380 -0.00380

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.926 Å	(100)
1.791 Å	(66)
2.325 Å	(33)
1.528 Å	(20)
1.949 Å	(19)
5.86 Å	(12)
3.054 Å	(8)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
Stage 7: Great Oxidation Event	<2.4
45b : [Other oxidized fumarolic minerals]

Type Occurrence of FluornatrocoulselliteHide

Type Locality:

ⓘ Mt Cleveland Mine, Luina, Heazlewood district, Waratah-Wynyard municipality, Tasmania, Australia

General Appearance of Type Material:

Pseudo-octahedral crystals up to 2 mm across.

Place of Conservation of Type Material:

Museum Victoria, Melbourne, Victoria, Australia, number M41450.

Geological Setting of Type Material:

A tin-copper deposit within a complex of Early Cambrian sequence of altered mafic volcanic rocks and sediments.

Associated Minerals at Type Locality:

Vivianite	Siderite	Quartz	Pyrite	Orthoclase
Morinite	Gearksutite	Fluorite

Reference:

Birch W D, Grey I E, Mumme W G, Pring A (2009) Coulsellite, a new mineral from the Cleveland mine, Luina, Tasmania. Australian Journal of Mineralogy 15, 21-24

Download:

https://rruff.info/rruff_1.0/uploads/AJM15_2009_21.pdf

Synonyms of FluornatrocoulselliteHide

Coulsellite

UM1990-21-F:AlCaHMgNa

Relationship of Fluornatrocoulsellite to other SpeciesHide

Member of:

Coulsellite Group > Pyrochlore Supergroup

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Fluornatrocoulsellite associated with Morinite	NaCa₂Al₂(PO₄)₂(OH)F₄ · 2H₂O
1 photo of Fluornatrocoulsellite associated with Gearksutite	Ca[Al(F,OH)₅(H₂O)]

Related Minerals - Strunz-mindat Grouping Hide

3.00.	Panichiite	(NH₄)₂SnCl₆	Iso. m3m (4/m 3 2/m) : Fm3m
3.00.	Paratacamite-(Mg)	Cu₃(Mg,Cu)(OH)₆Cl₂	Trig. 3 : R3

Fluorescence of FluornatrocoulselliteHide

In UV light:

Does not fluoresce under UV light.

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 FluornatrocoulselliteHide

mindat.org URL:

https://www.mindat.org/min-39766.html
Please feel free to link to this page.

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External Links:

Look for Fluornatrocoulsellite on Webmineral

Look for Fluornatrocoulsellite on Wikipedia

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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 FluornatrocoulselliteHide

Reference List:

Birch, W. D. and Pring, A. (1990) A calcian ralstonite-like mineral from the Cleveland Mine, Tasmania, Australia. Mineraogical Magazine, 54: 599-602.

Birch, W.D., Grey, I.E., Mumme, W.G., Pring, A. (2009) Coulsellite, a new mineral from the Cleveland mine, Luina, Tasmania. Australian Journal of Mineralogy: 15: 21-24.

Williams, P.A., Hatert, F., Pasero, M. (2009) New minerals approved in 2009. in International Mineralogical Association: 1-34.

Birch W D, Grey I E, Mumme W G, Pring A (2009) Coulsellite, a new mineral from the Cleveland mine, Luina, Tasmania. Australian Journal of Mineralogy 15, 21-24

Mumme, W.G., Grey, I.E., Birch, W.D., Pring, A., Bougerol, C., Wilson, N.C. (2010) Coulsellite, CaNa3AlMg3F14, a rhombohedral pyrochlore with 1:3 ordering in both A and B sites, from the Cleveland mine, Tasmania, Australia. American Mineralogist: 95: 736-740.

Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter 32. Mineralogical Magazine, 80 (5) 915-922 doi:10.1180/minmag.2016.080.084

Atencio, D., Andrade, M.B., Neto, A.C.B., Pereira, V.P. (2017) Ralstonite renamed hydrokenoralstonite, coulsellite renamed fluornatrocoulsellite, and their incorporation into the pyrochlore supergroup. The Canadian Mineralogist: 55: 115-120.

(2023) Fluornatrocoulsellite. Handbook of Mineralogy. Mineralogical Society of America

Localities for FluornatrocoulselliteHide

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.


Australia (TL)
Tasmania Waratah-Wynyard municipality Heazlewood district Luina ⓘ Mt Cleveland Mine (TL)	Birch et al. (1990) +1 other reference

Italy
Campania Naples Somma-Vesuvius Complex ⓘ Mount Vesuvius	Demartin et al. (2014)
ⓘ Vesuvius fumaroles	Demartin et al. (2014) +1 other reference
Ottaviano ⓘ Vesuvius fumaroles on eastern crater rim	Demartin et al. (2014) +1 other reference

Russia
Zabaykalsky Krai Kalarsky District ⓘ Katugin Ta-Nb deposit	Savel’eva et al. (2017)

Fluornatrocoulsellite

About FluornatrocoulselliteHide

Unique IdentifiersHide

IMA Classification of FluornatrocoulselliteHide

Classification of FluornatrocoulselliteHide

Mineral SymbolsHide

Physical Properties of FluornatrocoulselliteHide

Optical Data of FluornatrocoulselliteHide

Chemistry of FluornatrocoulselliteHide

Chemical AnalysisHide

Crystallography of FluornatrocoulselliteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of FluornatrocoulselliteHide

Synonyms of FluornatrocoulselliteHide

Relationship of Fluornatrocoulsellite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of FluornatrocoulselliteHide

Other InformationHide

Internet Links for FluornatrocoulselliteHide

References for FluornatrocoulselliteHide

Localities for FluornatrocoulselliteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide