Quick Links : Mindat手册 The Rock H. Currier Digital Library Mindat Newsletter [Free Download]

主页关于 Mindat Mindat手册 Mindat的历史版权 Who We Are 联系我们于 Mindat.org刊登广告

捐赠给 Mindat Corporate Sponsorship 赞助板页已赞助的板页在 Mindat刊登广告的广告商于 Mindat.org刊登广告

Learning Center What is a mineral?The most common minerals on earth Information for Educators Mindat Articles The Elements The Rock H. Currier Digital Library Geologic Time

搜索矿物的性质搜索矿物的化学 Advanced Locality Search 随意显示任何一种矿物 Random Locality 使用minID搜索邻近产地 Search Articles 搜索词汇表更多搜索选项

Mindat手册添加新照片 Rate Photos 产区编辑报告 Coordinate Completion Report 添加词汇表项目

Mining Companies 统计会员列表 Mineral Museums Clubs & Organizations 矿物展及活动 The Mindat目录表设备设置 The Mineral Quiz

照片搜索 Photo Galleries Search by Color 今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集 Photography

Cafarsite

A valid IMA mineral species

This page is currently not sponsored. Click here to sponsor this page.

Photos of Cafarsite (202)

Cafarsite Gallery Search Photos of Cafarsite

Edit Add Synonym Edit CIF structures Clear Cache

Cafarsite

Monte Cervandone area, Devero Alp, Baceno, Verbano-Cusio-Ossola Province, Piedmont, Italy

Cafarsite, etc.

Lärchultini, Binn, Goms, Valais, Switzerland

Cafarsite

Monte Cervandone area, Devero Alp, Baceno, Verbano-Cusio-Ossola Province, Piedmont, Italy

Cafarsite

Monte Cervandone area, Devero Alp, Baceno, Verbano-Cusio-Ossola Province, Piedmont, Italy

Cafarsite, etc.

Lärchultini, Binn, Goms, Valais, Switzerland

Cafarsite

Monte Cervandone area, Devero Alp, Baceno, Verbano-Cusio-Ossola Province, Piedmont, Italy

Cafarsite

Monte Cervandone area, Devero Alp, Baceno, Verbano-Cusio-Ossola Province, Piedmont, Italy

Cafarsite, etc.

Lärchultini, Binn, Goms, Valais, Switzerland

Hide all sections | Show all sections

About CafarsiteHide

Formula:

Ca_5.9Mn_1.7Fe₃Ti₃(AsO₃)₁₂ · 4-5H₂O

Chemical formula soon to be changed to either Ca₁₆(Na,Fe²⁺,REE)(Ti,Fe³⁺,Fe²⁺,Mn²⁺,Al)₁₆(AsO₃)₂₈F or Ca₁₆(Na,Fe²⁺,REE)(Ti,Fe³⁺,Al)₁₂(Fe²⁺,Mn)₄(AsO₃)₂₈F. Fluorine is essential.

Colour:

Dark brown

Hardness:

5½ - 6

Specific Gravity:

3.9

Crystal System:

Isometric

Name:

For the elements in its composition.

Type Locality:

ⓘ Wanni glacier - Scherbadung area (Monte Cervandone), Binn, Goms, Valais, Switzerland

This page provides mineralogical data about Cafarsite.

Unique IdentifiersHide

Mindat ID:

849

Long-form identifier:

mindat:1:1:849:7

GUID
(UUID V4):

f100404c-19ef-4968-8147-1af39cf031f7

IMA Classification of CafarsiteHide

IMA status:

Approved

IMA Formula:

(Ca,Na,◻)₁₉Ti₈Fe³⁺₄Fe²⁺₄(AsO₃)₂₈F

Type description reference:

Graeser, S. (1966): Asbecasit und Cafarsit, zwei neue Mineralien aus dem Binnatal (Kt. Wallis). Schweizerische Mineralogische und Petrographische Mitteilungen 46, 367-375 (in German).

Classification of CafarsiteHide

Strunz-mindat (2024):

4.JC.05

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

Dana 8th ed.:

45.1.4.1

45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous

Hey's CIM Ref.:

20.5.1

20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb

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
Caf	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of CafarsiteHide

Pronunciation:

Play	Recorded by	Country
	Jolyon Ralph	United Kingdom

Physical Properties of CafarsiteHide

Transparency:

Opaque

Colour:

Dark brown

Streak:

Yellow-brown

Hardness:

5½ - 6 on Mohs scale

Fracture:

Conchoidal

Density:

3.9 g/cm³ (Measured) 3.5 g/cm³ (Calculated)

Optical Data of CafarsiteHide

Type:

Isotropic

RI values:

n = 2.2

Birefringence:

Isotropic minerals have no birefringence

Surface Relief:

Very High

Chemistry of CafarsiteHide

Mindat Formula:

Ca_5.9Mn_1.7Fe₃Ti₃(AsO₃)₁₂ · 4-5H₂O

Chemical formula soon to be changed to either Ca₁₆(Na,Fe²⁺,REE)(Ti,Fe³⁺,Fe²⁺,Mn²⁺,Al)₁₆(AsO₃)₂₈F or Ca₁₆(Na,Fe²⁺,REE)(Ti,Fe³⁺,Al)₁₂(Fe²⁺,Mn)₄(AsO₃)₂₈F. Fluorine is essential.

Elements listed:

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

Crystallography of CafarsiteHide

Crystal System:

Isometric

Class (H-M):

m3 (2/m 3) - Diploidal

Space Group:

Pn3

Cell Parameters:

a = 15.984 Å

Unit Cell V:

4,083.72 Å³ (Calculated from Unit Cell)

Morphology:

Cuboctahedra.

Comment:

Space-group Pn-3 (symbol shown above is wrong - Mindat bug).

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4

View
CIF File Best | x | y | z | a | b | c

Rotation
Stop | Start

Labels
Console Off | On | Grey | Yellow

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

ID	Species	Reference	Year	Locality	Temp (K)
0020738	Cafarsite	Gatta G D, Rotiroti N, Camara F, Meven M (2018) On the labyrinthine world of arsenites: a single-crystal neutron and X-ray diffraction study of cafarsite province, Italy Physics and Chemistry of Minerals 45 819-829	2018	Mount Leone-Arbola nappe, Alpe Devero area, Verbano-Cusio-Ossola	293
0020739	Cafarsite	Gatta G D, Rotiroti N, Camara F, Meven M (2018) On the labyrinthine world of arsenites: a single-crystal neutron and X-ray diffraction study of cafarsite province, Italy Physics and Chemistry of Minerals 45 819-829	2018	Mount Leone-Arbola nappe, Alpe Devero area, Verbano-Cusio-Ossola	293
0020740	Cafarsite	Gatta G D, Rotiroti N, Camara F, Meven M (2018) On the labyrinthine world of arsenites: a single-crystal neutron and X-ray diffraction study of cafarsite province, Italy Physics and Chemistry of Minerals 45 819-829	2018	Mount Leone-Arbola nappe, Alpe Devero area, Verbano-Cusio-Ossola	293
0015405	Cafarsite	Edenharter A, Nowacki W, Weibel M (1977) Zur Struktur und Zusammensetzung von Cafarsit, Cafarsit ein As(III)-oxid, kein Arsenat Schweizerische Mineralogische und Petrographische Mitteilungen 57 1-16	1977	synthetic	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cafarsite'
loop_
_publ_author_name
'Gatta G D'
'Rotiroti N'
'Camara F'
'Meven M'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 45 
_journal_year 2018
_journal_page_first 819
_journal_page_last 829
_publ_section_title
;
 On the labyrinthine world of arsenites: a single-crystal neutron and
 X-ray diffraction study of cafarsite
 Note: xray final
 province, Italy
;
_database_code_amcsd 0020738
_chemical_compound_source 'Mount Leone-Arbola nappe, Alpe Devero area, Verbano-Cusio-Ossola'
_chemical_formula_sum 'As28 Ca16 Ti6 Fe7.536 Mn2 O84 F.941'
_cell_length_a 15.9507
_cell_length_b 15.9507
_cell_length_c 15.9507
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 4058.254
_exptl_crystal_density_diffrn      4.025
_symmetry_space_group_name_H-M 'P n 3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+z,1/2+x,-y'
  '1/2+z,-x,1/2+y'
  '-z,1/2+x,1/2+y'
  '-z,-x,-y'
  'y,1/2-z,1/2-x'
  '1/2-y,1/2-z,x'
  '1/2-y,z,1/2-x'
  'y,z,x'
  '1/2+x,-y,1/2+z'
  '-x,1/2+y,1/2+z'
  '1/2+x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-z,1/2-x,y'
  '1/2-z,x,1/2-y'
  'z,1/2-x,1/2-y'
  'z,x,y'
  '-y,1/2+z,1/2+x'
  '1/2+y,1/2+z,-x'
  '1/2+y,-z,1/2+x'
  '-y,-z,-x'
  '1/2-x,y,1/2-z'
  'x,1/2-y,1/2-z'
  '1/2-x,1/2-y,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
As1   0.37638   0.37638   0.37638   1.00000   0.00541
As2   0.22921   0.97783   0.03845   1.00000   0.00445
As3   0.39276   0.64083   0.35164   1.00000   0.00808
Ca1a   0.15270   0.15270   0.15270   0.14300   0.00200
Ca1b   0.16339   0.16339   0.16339   0.85700   0.00200
Ca2   0.09341   0.62515   0.35629   1.01200   0.00640
Ti1a   0.95176   0.75000   0.25000   0.64200   0.00370
Ti1b   0.95176   0.75000   0.25000   0.35800   0.00370
Fe1   0.25000   0.75000   0.75000   0.86800   0.03300
Fe2  -0.00609   0.25000   0.25000   0.82200   0.00229
Mn1a   0.00000   0.00000   0.00000   0.41300   0.00516
Mn1b   0.00000   0.00000   0.00000   0.58700   0.00516
O1  -0.00547   0.98129   0.13702   1.00000   0.00750
O2   0.30976   0.00360   0.35984   1.00000   0.00800
O3   0.28784   0.63300   0.04765   1.00000   0.00820
O4   0.16380   0.73782   0.14561   1.00000   0.00940
O5   0.17405   0.59476   0.22248   1.06700   0.04320
O6   0.03245   0.66390   0.22564   1.00000   0.00840
O7   0.17329   0.41767   0.21345   1.02700   0.02080
F   0.75000   0.75000   0.75000   0.94100   0.00960
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 0.00541 0.00541 0.00541 0.00145 0.00145 0.00145
As2 0.00514 0.00409 0.00412 -0.00095 -0.00038 0.00027
As3 0.01166 0.00575 0.00682 -0.00045 0.00410 0.00077
Ca2 0.00600 0.00690 0.00630 -0.00210 -0.00076 0.00032
Ti1a 0.00290 0.00470 0.00350 0.00000 0.00000 0.00121
Ti1b 0.00290 0.00470 0.00350 0.00000 0.00000 0.00121
Fe1 0.08680 0.00300 0.00920 0.00000 0.00000 0.00000
Fe2 0.00120 0.00270 0.00300 0.00000 0.00000 -0.00150
Mn1a 0.00520 0.00520 0.00520 0.00143 0.00143 0.00143
Mn1b 0.00520 0.00520 0.00520 0.00143 0.00143 0.00143
O1 0.00910 0.00550 0.00800 0.00330 0.00000 -0.00240
O2 0.01130 0.00960 0.00320 -0.00170 -0.00130 0.00180
O3 0.01060 0.00320 0.01090 0.00110 -0.00190 -0.00090
O4 0.00850 0.00750 0.01230 0.00000 0.00460 0.00150
O5 0.03610 0.05430 0.03930 0.03530 0.02110 0.03430
O6 0.00740 0.00950 0.00830 0.00270 0.00290 0.00090
O7 0.02540 0.02790 0.00910 -0.01770 0.00110 -0.00770
F 0.00960 0.00960 0.00960 0.00000 0.00000 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.827 Å	(100)
2.747 Å	(80)
3.140 Å	(60)
1.6857 Å	(60)
3.675 Å	(50)
1.724 Å	(50)
9.17 Å	(40)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
47d : [Arsenates, antimonates, selenates, bismuthinates]
47g : [Halogen-bearing surface weathering minerals]

Type Occurrence of CafarsiteHide

Type Locality:

ⓘ Wanni glacier - Scherbadung area (Monte Cervandone), Binn, Goms, Valais, Switzerland

Place of Conservation of Type Material:

Natural History Museum, Basel, Switzerland, SG749; The Natural History Museum, London, England, 1966,434.

Associated Minerals at Type Locality:

Asbecasite

Gasparite-(Ce)

Synchysite

Reference:

Graeser, S. (1966): Asbecasit und Cafarsit, zwei neue Mineralien aus dem Binnatal (Kt. Wallis). Schweizerische Mineralogische und Petrographische Mitteilungen 46, 367-375 (in German).

Synonyms of CafarsiteHide

Arsenoferrite

IMA1965-036

Other Language Names for CafarsiteHide

German:Cafarsit

Russian:Кафарсит

Simplified Chinese:砷钛铁钙石

Spanish:Cafarsita

Traditional Chinese:砷鈦鐵鈣石

Common AssociatesHide

Associated Minerals Based on Photo Data:

14 photos of Cafarsite associated with Quartz	SiO₂
12 photos of Cafarsite associated with Agardite
5 photos of Cafarsite associated with Magnetite	Fe²⁺Fe³⁺₂O₄
5 photos of Cafarsite associated with Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
4 photos of Cafarsite associated with Mixite	BiCu₆(AsO₄)₃(OH)₆ · 3H₂O
4 photos of Cafarsite associated with Smoky Quartz	SiO₂
4 photos of Cafarsite associated with Albite	Na(AlSi₃O₈)
4 photos of Cafarsite associated with Hematite	Fe₂O₃
3 photos of Cafarsite associated with Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
3 photos of Cafarsite associated with Senaite	Pb(Mn,Y,U)(Fe,Zn)₂(Ti,Fe,Cr,V)₁₈(O,OH)₃₈

Related Minerals - Strunz-mindat Grouping Hide

4.JC.10	Lazarenkoite	(Ca,Fe²⁺)Fe³⁺As³⁺₃O₇ · 3H₂O	Orth.
4.JC.15	Rouseite	Pb₂Mn²⁺[AsO₃]₂ · 2H₂O	Tric.
4.JC.20	Vajdakite	[(Mo⁶⁺O₂)₂(H₂O)₂As³⁺₂O₅] · 3H₂O	Mon. 2/m : P2₁/b

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 CafarsiteHide

mindat.org URL:

https://www.mindat.org/min-849.html
Please feel free to link to this page.

Search Engines:

Look for Cafarsite on Google

Look for Cafarsite images on Google

Look for Cafarsite on Bing

Look for Cafarsite images on Bing

Look for Cafarsite on DuckDuckGo

Look for Cafarsite images on DuckDuckGo

Look for Cafarsite in the Rock H. Currier Digital Library

External Links:

Look for Cafarsite on Webmineral

Look for Cafarsite on Wikipedia

Look for Cafarsite 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

Mineral Dealers:

The Arkenstone - Fine Minerals

Wilensky Exquisite Minerals

Fine Minerals from Weinrich Minerals, Inc.

Buy from McDougall Minerals

High-end worldwide specimens & outstanding customer service

Buy rare minerals from Excalibur Minerals

Blue Gems Australian & International

Buy from David K Joyce minerals

References for CafarsiteHide

Reference List:

Graeser, S. (1966): Asbecasit und Cafarsit, zwei neue Mineralien aus dem Binnatal (Kt. Wallis). Schweizerische Mineralogische und Petrographische Mitteilungen 46, 367-375 (in German).

American Mineralogist: 52 (1967) 1584.

Edenharter, A., Nowacki, W., Weibel, M. (1977): Zur Struktur und Zusammensetzung von Cafarsit, ein As(III)-oxid, kein Arsenat [The structure and composition of cafarsite. Cafarsite, an arsenic(III) oxide without arsenate groups. Schweizerische Mineralogische und Petrographische Mitteilungen 57, 1-16 (in German).

American Mineralogist: 63 (1978) 795.

Kloprogge, J.T. & Frost, R.L. (1999): Raman microscopy study of cafarsite. Appl. Spectrosc. 53, 874-880.

Gatta, G.D., Rotiroti, N., Cámara, F., Meven, M. (2018): On the labyrinthine world of arsenites: a single-crystal neutron and X-ray diffraction study of cafarsite. Physics and Chemistry of Minerals: 45, 819-829.

Cametti, G., Nagashima. M., Armbruster, T. and Fisch, M. (2018): New data on cafarsite: reinvestigation of its crystal structure and chemical composition. European Journal of Mineralogy, 30, 859-868.

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

Localities for CafarsiteHide

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.


Canada
Ontario Thunder Bay District Bomby Township ⓘ Hemlo gold deposit	HARRIS (1989)

Italy
Piedmont Verbano-Cusio-Ossola Province Baceno Devero Alp ⓘ Monte Cervandone area
ⓘ Pizzo Bandiera	Albertini C. (1991) +3 other references

Switzerland
Valais Goms Binn ⓘ Gischi glacier (incl. Gischihorn)
Lärchultini ⓘ Gorb	Graeser et al. (1994) +1 other reference
ⓘ Wanni glacier - Scherbadung area (Monte Cervandone) (TL)	Schweiz.Min.Petr.Mitt. (1966)
Östlich Raron Grengiols Chummibort ⓘ Hillehorn northeast slope	Cuchet et al. (2005)
ⓘ Mätti Valley	Krzemnicki (1992)

Cafarsite

About CafarsiteHide

Unique IdentifiersHide

IMA Classification of CafarsiteHide

Classification of CafarsiteHide

Mineral SymbolsHide

Pronunciation of CafarsiteHide

Physical Properties of CafarsiteHide

Optical Data of CafarsiteHide

Chemistry of CafarsiteHide

Crystallography of CafarsiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of CafarsiteHide

Synonyms of CafarsiteHide

Other Language Names for CafarsiteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for CafarsiteHide

References for CafarsiteHide

Localities for CafarsiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide