Fetiasite

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Photos of Fetiasite (16)

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Fetiasite

Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite

Gorb, Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite, etc.

Gorb, Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite

Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite

Gorb, Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite, etc.

Gorb, Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite

Lärchultini, Binn, Goms, Valais, Switzerland

Fetiasite

Gorb, Lärchultini, Binn, Goms, Valais, Switzerland

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About FetiasiteHide

Formula:

(Fe³⁺,Fe²⁺,Ti)₃(As₂O₅)O₂

Colour:

Brown to black

Hardness:

Crystal System:

Monoclinic

Name:

The name reflects its chemical composition: Iron (Fe), Titanium (Ti) and Arsenic (As)

Co-Type Localities:

ⓘ Monte Cervandone area (Pizzo Cervandone; Scherbadung; Cherbadung; incl. Conca del Cervandone; Ghiacciaio della Rossa), Devero Alp, Baceno, Verbano-Cusio-Ossola Province, Piedmont, Italy
ⓘ Gorb, Lärchultini, Binn, Goms, Valais, Switzerland

This page provides mineralogical data about Fetiasite.

Classification of FetiasiteHide

IMA status:

Approved

Strunz 8th ed.:

4/J.06-10

Nickel-Strunz 10th (pending) ed.:

4.JB.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
B : Arsenites, antimonites, bismuthites; with additional anions, without H₂O

Dana 8th ed.:

45.1.13.1

45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous

Physical Properties of FetiasiteHide

Colour:

Brown to black

Streak:

Light brown to ochre

Hardness:

5 on Mohs scale

Chemical Properties of FetiasiteHide

Formula:

(Fe³⁺,Fe²⁺,Ti)₃(As₂O₅)O₂

IMA Formula:

(Fe²⁺,Fe³⁺,Ti⁴⁺)₃O₂As³⁺₂O₅

Elements listed:

As, Fe, O, Ti - search for minerals with similar chemistry

Common Impurities:

Crystallography of FetiasiteHide

Crystal System:

Monoclinic

Cell Parameters:

a = 10.61 Å, b = 3.25 Å, c = 8.94 Å
β = 108.95°

Ratio:

a:b:c = 3.265 : 1 : 2.751

Unit Cell V:

291.57 Å³ (Calculated from Unit Cell)

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)
0001675	Fetiasite	Graeser S, Schwander H, Demartin F, Gramaccioli C M, Pilati T, Reusser E (1994) Fetiasite (Fe2+,Fe3+,Ti)3O2[As2O5], a new arsenite mineral: Its description and structure determination American Mineralogist 79 996-1002		1994	Lengenbach quarry, Binnatal, Switzerland	0	293
0001676	Fetiasite	Graeser S, Schwander H, Demartin F, Gramaccioli C M, Pilati T, Reusser E (1994) Fetiasite (Fe2+,Fe3+,Ti)3O2[As2O5], a new arsenite mineral: Its description and structure determination American Mineralogist 79 996-1002		1994	Cervandone	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Fetiasite'
loop_
_publ_author_name
'Graeser S'
'Schwander H'
'Demartin F'
'Gramaccioli C M'
'Pilati T'
'Reusser E'
_journal_name_full 'American Mineralogist'
_journal_volume 79 
_journal_year 1994
_journal_page_first 996
_journal_page_last 1002
_publ_section_title
;
 Fetiasite (Fe2+,Fe3+,Ti)3O2[As2O5], a new arsenite mineral: Its description
 and structure determination
 Note: Sample B
;
_database_code_amcsd 0001675
_chemical_compound_source 'Lengenbach quarry, Binnatal, Switzerland'
_chemical_formula_sum 'As2 Fe2.38 Ti.58 O7'
_cell_length_a 10.616
_cell_length_b 3.242
_cell_length_c 8.932
_cell_angle_alpha 90
_cell_angle_beta 108.89
_cell_angle_gamma 90
_cell_volume 290.857
_exptl_crystal_density_diffrn      4.825
_symmetry_space_group_name_H-M 'P 1 21/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
As1   0.41010   0.25000   0.66453   1.00000
As2   0.24954   0.25000   0.24816   1.00000
Fe1   0.04912   0.25000   0.86648   1.00000
Fe2   0.64280   0.25000   0.02237   1.00000
Fe   0.88267   0.25000   0.39356   0.38000
Ti   0.88267   0.25000   0.39356   0.58000
O1   0.08160   0.25000   0.11590   1.00000
O2   0.32870   0.25000   0.10360   1.00000
O3   0.83240   0.25000   0.15860   1.00000
O4   0.99280   0.25000   0.61920   1.00000
O5   0.43350   0.25000   0.87220   1.00000
O6   0.23470   0.25000   0.59900   1.00000
O7   0.72750   0.25000   0.67630   0.50000
O8   0.55180   0.25000   0.38340   0.50000
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
As1 0.00940 0.01090 0.01010 0.00000 0.00359 0.00000
As2 0.01010 0.01060 0.01140 0.00000 0.00416 0.00000
Fe1 0.01150 0.01010 0.01310 0.00000 0.00450 0.00000
Fe2 0.00800 0.00870 0.01070 0.00000 0.00310 0.00000
Fe 0.01910 0.01440 0.01210 0.00000 0.00220 0.00000
Ti 0.01910 0.01440 0.01210 0.00000 0.00220 0.00000
O1 0.01000 0.02200 0.02000 0.00000 0.00270 0.00000
O2 0.02100 0.02100 0.01940 0.00000 0.01350 0.00000
O3 0.00810 0.02000 0.00940 0.00000 0.00100 0.00000
O4 0.01000 0.04300 0.01000 0.00000 0.00210 0.00000
O5 0.00820 0.02700 0.01030 0.00000 0.00250 0.00000
O6 0.01000 0.07700 0.01500 0.00000 0.00340 0.00000
O7 0.02100 0.01500 0.01400 0.00000 0.00500 0.00000
O8 0.02800 0.02400 0.02600 0.00000 0.01400 0.00000

Type Occurrence of FetiasiteHide

Co-Type Localities:

Synonyms of FetiasiteHide

IMA1991-019

Other Language Names for FetiasiteHide

German:Fetiasit

Russian:Фетиасит

Spanish:Fetiasita

Common AssociatesHide

Associated Minerals Based on Photo Data:

3 photos of Fetiasite associated with Graeserite	(Fe³⁺,Ti)₄Ti₃AsO₁₃(OH)
2 photos of Fetiasite associated with Hematite	Fe₂O₃
1 photo of Fetiasite associated with Adularia	KAlSi₃O₈
1 photo of Fetiasite associated with Chamosite	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈
1 photo of Fetiasite associated with Quartz	SiO₂

Related Minerals - Nickel-Strunz Grouping Hide

4.JB.10	Manganarsite	Mn₃(As₂O₄)(OH)₄	Trig.
4.JB.15	Magnussonite	Mn₁₀As₆O₁₈(OH,Cl)₂	Iso. m3m (4/m 3 2/m) : Ia3d
4.JB.15	UM1984-09-AsO:ClHMn	Mn₁₀As₆O₁₈(OH)Cl	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
4.JB.20	Armangite	Mn²⁺₂₆(AsO₃)₁₄(HAsO₃)₄(CO₃)	Trig. 3 : P3
4.JB.25	Nanlingite	Na(Ca₅Li)Mg₁₂(AsO₃)₂[Fe(AsO₃)₆]F₁₄	Trig.
4.JB.30	Asbecasite	Ca₃(Ti,Sn⁴⁺)Be₂(AsO₃)₆(SiO₄)₂	Trig. 3m : P3c1
4.JB.35	Stenhuggarite	CaFeSb(AsO₃)₂O	Tet.
4.JB.40	Trigonite	Pb₃Mn²⁺(AsO₃)₂(HAsO₃)	Mon. m
4.JB.45	Finnemanite	Pb₅(AsO₃)₃Cl	Hex. 6/m : P6₃/m
4.JB.50	Gebhardite	Pb₈(As₂O₅)₂OCl₆	Mon. 2/m : P2₁/b
4.JB.55	Derbylite	Fe³⁺₄Ti₃Sb³⁺O₁₃(OH)	Mon. 2/m : P2₁/m
4.JB.55	Tomichite	(V,Fe)₄Ti₃AsO₁₃(OH)	Mon. 2/m : P2₁/m
4.JB.55	Graeserite	(Fe³⁺,Ti)₄Ti₃AsO₁₃(OH)	Mon. 2/m : B2/m
4.JB.60	Hemloite	(Ti,V³⁺,Fe³⁺,Al)₁₂(As³⁺,Sb³⁺)₂O₂₃(OH)	Tric. 1 : P1
4.JB.65	Freedite	Cu⁺Pb₈(AsO₃)₂O₃Cl₅	Mon. 2/m : B2/m
4.JB.70	Georgiadèsite	Pb₄(AsO₃)Cl₄(OH)	Mon.
4.JB.75	Ekatite	(Fe³⁺,Fe²⁺,Zn)₁₂(AsO₃)₆(AsO₃,HSiO₄)₂(OH)₆	Hex.

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.

References for FetiasiteHide

Reference List:

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)

American Mineralogist: 79: 996-1002.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for FetiasiteHide

mindat.org URL:

https://www.mindat.org/min-1542.html
Please feel free to link to this page.

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External Links:

Look for Fetiasite on Webmineral

Look for Fetiasite on Wikipedia

Look for Fetiasite on Mineralien Atlas

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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Localities for FetiasiteHide

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 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 (eg from pseudomorphs.)

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


Australia
New South Wales Kennedy Co. Condobolin district Mineral Hill field ⓘ Pearse North (Pearse prospect; Pearse project) ?	McKinnon, A., 2013 Recent Developments at the Mineral Hill mine, NSW. Abstracts, 36th Annual Seminar, Mineralogical Societies of Australasia. Sydney. p. 21-23.

Italy (TL)
Piedmont Verbano-Cusio-Ossola Province Baceno Devero Alp ⓘ Monte Cervandone area (Pizzo Cervandone; Scherbadung; Cherbadung; incl. Conca del Cervandone; Ghiacciaio della Rossa) (TL)	American Mineralogist, Volume 79, pages 996-1002, 1994 Guastoni, A., Nestola, F., and Zorzi, F. (2020) Novità dal Monte Cervandone (Val Devero, VB). I ritrovamenti di tinnunculite, rabdofane-(La), parnauite, hingganite-(Y), fetiasite. Rivista Mineralogica Italiana, 44, 3 (3-2020), 144-156.

Switzerland (TL)
Valais Goms Binn Lärchultini ⓘ Gorb (TL)	Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 164-165.; American Mineralogist, Volume 79, pages 996-1002, 1994
ⓘ Wanni glacier - Scherbadung area (Monte Cervandone)	No reference listed

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Fetiasite

About FetiasiteHide

Classification of FetiasiteHide

Physical Properties of FetiasiteHide

Chemical Properties of FetiasiteHide

Crystallography of FetiasiteHide

Crystal StructureHide

Type Occurrence of FetiasiteHide

Synonyms of FetiasiteHide

Other Language Names for FetiasiteHide

Common AssociatesHide

Related Minerals - Nickel-Strunz GroupingHide

Other InformationHide

References for FetiasiteHide

Internet Links for FetiasiteHide

Localities for FetiasiteHide

Locality ListHide

Related Minerals - Nickel-Strunz Grouping Hide