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Arsenocrandallite

A valid IMA mineral species
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01392940015881835221468.jpg
Arsenocrandallite, etc.

Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece
09333300014946346581566.jpg
Arsenocrandallite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
08280510015300151481417.jpg
Arsenocrandallite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
05122280015877129125906.jpg
Arsenocrandallite, etc.

Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece
09333300014946346581566.jpg
Arsenocrandallite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
09239220015285130745437.jpg
Arsenocrandallite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
01392940015881835221468.jpg
Arsenocrandallite, etc.

Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece
09333300014946346581566.jpg
Arsenocrandallite

Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
Hide all sections | Show all sections

About ArsenocrandalliteHide

Formula:
CaAl3(AsO4)(AsO3OH)(OH)6
Colour:
White, creamy yellowish-white, also blue to bluish-green
Lustre:
Sub-Vitreous, Resinous, Waxy, Dull
Hardness:
5½
Specific Gravity:
3.25
Crystal System:
Trigonal
Name:
Named by Kurt Walenta in 1981 in allusion to its composition as the ARSENate analogue of Crandallite.
The arsenate analogue of Crandallite.


Unique IdentifiersHide

Mindat ID:
365
Long-form identifier:
mindat:1:1:365:0
GUID
(UUID V4):
0d917436-49f4-477f-902f-db17dd4b7b18

IMA Classification of ArsenocrandalliteHide

IMA status:
Approved
First published:
1981

Classification of ArsenocrandalliteHide

Strunz-mindat (2023):
8.BL.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
Dana 7th ed.:
42.7.4.1
Dana 8th ed.:
42.7.4.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
Hey's CIM Ref.:
20.4.6

20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
AcdlIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
AcrThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of ArsenocrandalliteHide

Lustre:
Sub-Vitreous, Resinous, Waxy, Dull
Transparency:
Transparent, Translucent
Comment:
Originally erroneously described as "vitreous"
Colour:
White, creamy yellowish-white, also blue to bluish-green
Streak:
White
Hardness:
5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Probably has a perfect cleavage as in other members of the group, but not observed because of small grain size.
Density:
3.25(1) g/cm3 (Measured)    3.30 g/cm3 (Calculated)

Optical Data of ArsenocrandalliteHide

Type:
Uniaxial
RI values:
n = 1.625
Birefringence:
The mineral is isotropic or very weakly birefringent.
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Comments:
Mean n = 1.625.

Chemistry of ArsenocrandalliteHide

Mindat Formula:
CaAl3(AsO4)(AsO3OH)(OH)6
Elements listed:
Al, As, Ca, H, O - search for minerals with similar chemistry

Crystallography of ArsenocrandalliteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Cell Parameters:
a = 7.08 Å, c = 17.27 Å
Ratio:
a:c = 1 : 2.439
Unit Cell V:
749.70 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Spherulitic aggregates, reniform crusts. Minute somewhat spiky crystals in small dense crusts.
Comment:
Possible 3m space group

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.84 Å(80)
5.02 Å(30)
3.55 Å(90)
2.99 Å(100)
2.23 Å(40)
1.919 Å(50)
1.769 Å(60)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Geological Setting:
Secondary oxidation zone

Type Occurrence of ArsenocrandalliteHide

Type Locality:
ⓘ Neubulach, Calw, Karlsruhe Region, Baden-Württemberg, Germany
General Appearance of Type Material:
Reniform crusts and spherulitic aggregates up to 0.1 mm.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 150251.
Geological Setting of Type Material:
Oxidized veins in a polymetallic hydrothermal deposit.
Associated Minerals at Type Locality:
Tennantite-Tetrahedrite SeriesQuartzMansfielditeMansfielditeMalachite
GoethiteChalcophylliteBulachiteBrochantiteBaryte
BariopharmacosideriteAzuriteArseniosiderite

Synonyms of ArsenocrandalliteHide

Other Language Names for ArsenocrandalliteHide

Relationship of Arsenocrandallite to other SpeciesHide

Member of:
Dussertite Group > Alunite Supergroup
Other Members of this group:
Arsenoflorencite-(Ce)CeAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
Arsenoflorencite-(La)LaAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
Arsenoflorencite-(Nd)NdAl3(AsO4)2(OH)6Trig.
ArsenogorceixiteBaAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
ArsenowaylanditeBiAl3(AsO4)2(OH)6Trig.
DussertiteBaFe3+3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
Graulichite-(Ce)CeFe3+3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
Graulichite-(La)LaFe3+3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
PhilipsbornitePbAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
SegnititePbFe3+3AsO4(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
31 photos of Arsenocrandallite associated with ConichalciteCaCu(AsO4)(OH)
19 photos of Arsenocrandallite associated with OliveniteCu2(AsO4)(OH)
17 photos of Arsenocrandallite associated with AzuriteCu3(CO3)2(OH)2
11 photos of Arsenocrandallite associated with YukoniteCa3Fe3+(AsO4)2(OH)3 · 5H2O
6 photos of Arsenocrandallite associated with CalciteCaCO3
6 photos of Arsenocrandallite associated with LavendulanNaCaCu5(AsO4)4Cl · 5H2O
5 photos of Arsenocrandallite associated with Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2O
5 photos of Arsenocrandallite associated with Barahonaite-(Fe)(Ca,Cu,Na,Fe3+,Al)12Fe3+2(AsO4)8(OH,Cl)x · nH2O
4 photos of Arsenocrandallite associated with ArseniosideriteCa2Fe3+3(AsO4)3O2 · 3H2O
4 photos of Arsenocrandallite associated with ZincoliveniteCuZn(AsO4)(OH)

Related Minerals - Strunz-mindat GroupingHide

8.BL.Graulichite-(La)LaFe3+3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.OberwolfachiteSrFe3+3(AsO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.KiryuiteNaMnAl(PO4)F3Mon. 2/m : P21/m
8.BL.ClouditeBaFe3+3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05BeudantitePbFe3(AsO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05CorkitePbFe3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05HidalgoitePbAl3(AsO4)(SO4)(OH)6Trig. 3m : R3m
8.BL.05HinsdalitePbAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05KemmlitziteSrAl3(AsO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05SvanbergiteSrAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05WeileriteBaAl3(AsO4)(SO4)(OH)6Hex.
8.BL.05WoodhouseiteCaAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05GallobeudantitePbGa3(AsO4)(SO4)(OH)6Trig. 3m : R3m
8.BL.05UM2011-07-POSO:AlBaHBaAl3(PO4)(SO4)(OH)6
8.BL.10ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10ArsenogorceixiteBaAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10BenauiteSrFe3+3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10CrandalliteCaAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10DussertiteBaFe3+3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10EylettersiteTh0.75Al3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10GorceixiteBaAl3(PO4)(PO3OH)(OH)6Mon. m : Bm
8.BL.10GoyaziteSrAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10KintoreitePbFe3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10PhilipsbornitePbAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10PlumbogummitePbAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10SegnititePbFe3+3AsO4(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10 vaViséite
8.BL.10SpringcreekiteBaV3+3(PO4)2(OH,H2O)6Trig. 3m (3 2/m) : R3m
8.BL.10GalloplumbogummitePb(Ga,Al,Ge)3(PO4)2(OH)6Trig. 3m : R3m
8.BL.13Arsenoflorencite-(La)LaAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13Arsenoflorencite-(Nd)NdAl3(AsO4)2(OH)6Trig.
8.BL.13Arsenoflorencite-(Ce)CeAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13Florencite-(Ce)CeAl3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13Florencite-(La)LaAl3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13Florencite-(Nd)NdAl3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13WaylanditeBiAl3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13ZaïriteBiFe3+3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13ArsenowaylanditeBiAl3(AsO4)2(OH)6Trig.
8.BL.13Graulichite-(Ce)CeFe3+3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13Florencite-(Sm)SmAl3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m
8.BL.13Unnamed (As-analogue of Zaïrite)(Bi,Pb)Fe3+3(AsO4)2(OH)6
8.BL.15ViitaniemiiteNa(Ca,Mn2+)Al(PO4)(F,OH)3Mon. 2/m : P21/m
8.BL.25PattersonitePbFe3+3(PO4)2(OH)5 · H2OTric. 1 : P1

Fluorescence of ArsenocrandalliteHide

In UV light:
Not fluorescent in UV

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 ArsenocrandalliteHide

References for ArsenocrandalliteHide

Reference List:
Walenta, K. (1981) Mineralien der Beudantit-Crandallitgruppe aus dem Schwarzwald: Arsenocrandallit und sulfatfreier Weilerit. Schweizerische mineralogische und petrographische Mitteilungen: 61: 23-35. [in German]
Fleischer, Michael, Chao, George Y., Mandarino, Joseph A. (1982) New mineral names. American Mineralogist, 67. 854-860 p.854
Schwab, R.G., Götz, C., Herold, H., Pinto de Oliveira, N. (1991) Compounds of the crandallite type: Synthesis and properties of pure (Ca, Sr, Ba, Pb, La, Ce to Eu) - arsenocrandallites. Neues Jahrbuch für Mineralogie, Monatshefte: 1991: 97-112.
Jambor, John L. (1999) Nomenclature of the Alunite Supergroup. The Canadian Mineralogist, 37 (6) 1323-1341
Bayliss, P., Kolitsch, U., Nickel, E.H., Pring, A. (2010) Alunite supergroup: recommended nomenclature. Mineralogical Magazine: 74: 919-927.

Localities for ArsenocrandalliteHide

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.
France
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Toulon
        • Le Pradet
jean-marie CLAUDE collection
www.mine-capgaronne.fr (2003) http://www.mine-capgaronne.fr/site/Mineraux/ListeMineraux.html
Georges Favreau collection
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Walenta, Kurt (1992) Die Mineralien des Schwarzwaldes und ihre Fundstellen. Christian Weise Verlag, München. p.1-336.
    • Karlsruhe Region
      • Calw
American Mineralogist: 67: 854.
American Mineralogist: 70: 214
Walenta, K. (1981) Mineralien der Beudantit-Crandallitgruppe aus dem Schwarzwald: Arsenocrandallit und sulfatfreier Weilerit. Schweizerische mineralogische und petrographische Mitteilungen: 61: 23-35.
Fleischer, Michael, Chao, George Y., Mandarino, Joseph A. (1982) New mineral names. American Mineralogist, 67. 854-860
  • Saxony
    • Erzgebirgskreis
      • Marienberg
        • Lauta
Hajek, W. (2010): Kristallwelten Marienberg. Weise Verlag, München.
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Fritz Schreiber collection
Chukanov, N.V., Pekov, I.V., Zadov, A.E. (2007): Attikaite, Ca3Cu2Al2(AsO4)4(OH)4•2H2O, a new mineral species. Geology of Ore Deposits, 49(8), 720-726. [English translation of Russian paper from 2007]
            • Mercati mines
No reference listed
Gröbner, J. (2001) Roter Skorodit und weitere ungewöhnliche Arsenate: Die Mineralien des Abbaus 132 der Grube Christiana, Lavrion/Griechenland. Lapis, 26 (11) 13-21
          • Elafos
Lapis, 24, 7/8 (1999)
          • Km 3
            • Kaminiza mines
Kostas Tzanis collection (EDS analysis of a single aggregate on pharmacosiderite)
  • Central Macedonia
    • Serres
      • Nea Zichni
        • Alistrati
Seemann, R., Niedermayr, G. & Brandstätter, F. (2008): Mineralien aus dem Eisen- und Farberdebergbau von Livadista bei Alistrati. Mineralien-Welt 19 (2), 34-54.
Namibia
 
  • Oshikoto Region
    • Tsumeb
Bowell, R.J & Mocke, H. 2018. Minerals new to Tsumeb. Communications of the
Geological Survey of Namibia, 19, 20-46
Norway
 
  • Nordland
    • Sørfold
Husdal, Tomas (2008) The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum Skrift 38, 5-28
Spain
 
  • Andalusia
    • Almería
      • Cuevas del Almanzora
Georges FAVREAU collection + EDX analysis
  • Murcia
    • Mazarrón
      • Pastrana
Calvo, M. (2015) Minerales y Minas de España. Vol. VII, Fosfatos, arseniatos y vanadatos. Escuela Técnica Superior de Ingenieros de Minas de Madrid - Fundación Gómez Pardo. 479 pages.
USA
 
  • Utah
    • Juab County
      • Tintic Mining District
        • Eureka
Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (2000) Handbook of Mineralogy Vol. 4 - Arsenates, phosphates, vanadates. Mineral Data Publishing, Tucson, Arizona.
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