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Arsenocrandallite

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Formula:
CaAl3(AsO4)(AsO3OH)(OH)6
Colour:
White, creamy yellowish-white, also blue to bluish-green
Lustre:
Sub-Vitreous, Resinous, Waxy, Dull
Hardness:
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.


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Classification of ArsenocrandalliteHide

Approved
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
42.7.4.1

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

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

Physical Properties of ArsenocrandalliteHide

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:
0.000
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
Dispersion:
Mean n = 1.625. The mineral is isotropic or very weakly birefringent.
Pleochroism:
Non-pleochroic

Chemical Properties of ArsenocrandalliteHide

Formula:
CaAl3(AsO4)(AsO3OH)(OH)6

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 (80)
5.02 (30)
3.55 (90)
2.99 (100)
2.23 (40)
1.919 (50)
1.769 (60)

Type Occurrence of ArsenocrandalliteHide

Place of Conservation of Type Material:
Smithsonian Institution
Geological Setting of Type Material:
Oxidized veins in a polymetallic hydrothermal deposit
Associated Minerals at Type Locality:

Synonyms of ArsenocrandalliteHide

Other Language Names for ArsenocrandalliteHide

Relationship of Arsenocrandallite to other SpeciesHide

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
PhilipsbornitePbAl3(AsO4)2(OH)5 · H2OTrig.
SegnititePbFe3+3(AsO4)2(OH,H2O)6Trig. 3m (3 2/m) : R3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Conichalcite10 photos of Arsenocrandallite associated with Conichalcite on mindat.org.
Azurite8 photos of Arsenocrandallite associated with Azurite on mindat.org.
Lavendulan6 photos of Arsenocrandallite associated with Lavendulan on mindat.org.
Yukonite5 photos of Arsenocrandallite associated with Yukonite on mindat.org.
Olivenite3 photos of Arsenocrandallite associated with Olivenite on mindat.org.
Cobaltarthurite1 photo of Arsenocrandallite associated with Cobaltarthurite on mindat.org.
Cuprian Adamite1 photo of Arsenocrandallite associated with Cuprian Adamite on mindat.org.
Chenevixite1 photo of Arsenocrandallite associated with Chenevixite on mindat.org.
Zincolivenite1 photo of Arsenocrandallite associated with Zincolivenite on mindat.org.
Aragonite1 photo of Arsenocrandallite associated with Aragonite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

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.
8.BL.05HinsdalitePbAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05KemmlitziteSrAl3(AsO4)(SO4)(OH)6Trig.
8.BL.05SvanbergiteSrAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05WoodhouseiteCaAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.05GallobeudantitePbGa3(AsO4)(SO4)(OH)6Trig.
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(HPO4,PO4)2(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.
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)2(OH)5 · H2OTrig.
8.BL.10PlumbogummitePbAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
8.BL.10SegnititePbFe3+3(AsO4)2(OH,H2O)6Trig. 3m (3 2/m) : R3m
8.BL.10SpringcreekiteBaV3+3(PO4)2(OH,H2O)6Trig. 3m (3 2/m) : 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)6
8.BL.13Florencite-(La)LaAl3(PO4)2(OH)6
8.BL.13Florencite-(Nd)NdAl3(PO4)2(OH)6
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.15ViitaniemiiteNa(Ca,Mn2+)Al(PO4)(F,OH)3Mon.
8.BL.25PattersonitePbFe3+3(PO4)2(OH)5 · H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

42.7.4.2PhilipsbornitePbAl3(AsO4)2(OH)5 · H2OTrig.
42.7.4.3ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
42.7.4.4SegnititePbFe3+3(AsO4)2(OH,H2O)6Trig. 3m (3 2/m) : R3m
42.7.4.8KolitschitePbZn0.5Fe3(AsO4)2(OH)6Mon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.4.1MansfielditeAlAsO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
20.4.2BulachiteAl2(AsO4)(OH)3 · 3H2OOrth.
20.4.3PharmacoalumiteKAl4(AsO4)3(OH)4 · 6.5H2OIso. 4 3m : P4 3m
20.4.4LuetheiteCu2Al2(AsO4)2(OH)4Mon. 2/m : P21/m
20.4.5ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
20.4.7Arsenoflorencite-(Ce)CeAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
20.4.8Arsenoflorencite-(La)LaAl3(AsO4)2(OH)6Trig. 3m (3 2/m) : R3m
20.4.9Arsenoflorencite-(Nd)NdAl3(AsO4)2(OH)6Trig.
20.4.10Gerdtremmelite(Zn,Fe)(Al,Fe)2(AsO4)(OH)5Tric.
20.4.11Gasparite-(Ce)Ce(AsO4)
20.4.12Chernovite-(Y)Y(AsO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
20.4.13Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
20.4.14Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m
20.4.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
20.4.16Retzian-(Ce)Mn2+2Ce(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
20.4.17Retzian-(La)(Mn2+,Mg)2(La,Ce,Nd)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
20.4.18Retzian-(Nd)Mn2+2(Nd,Ce,La)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban

Fluorescence of ArsenocrandalliteHide

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.

References for ArsenocrandalliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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, M., Chao, G.Y., Mandarino, J.A. (1982) New mineral names. American Mineralogist: 67: 854-860.
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, J.L. (1999) Nomenclature of the alunite supergroup. The Canadian Mineralogist: 37: 1323-1341.
Bayliss, P., Kolitsch, U., Nickel, E.H., Pring, A. (2010) Alunite supergroup: recommended nomenclature. Mineralogical Magazine: 74: 919-927.

Internet Links for ArsenocrandalliteHide

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

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Belgium
 
  • Luxembourg Province
    • Stavelot Massif
      • Vielsalm
        • Grand Halleux
Loeber, A. (2005). "La carrière de Hourt, Grand Halleux, Province de Luxembourg, Belgique." Magazine du 4M, 26(255), 5-7; Dehove, J. and Hubert, F. (2006). "Nouvelles découvertes à Hourt." Magazine du 4M, 27(263), 9-11.
France
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
http://www.mine-capgaronne.fr/site/Mineraux/ListeMineraux.html
Georges FAVREAU collection
Germany (TL)
 
  • Baden-Württemberg
    • Black Forest
      • Calw
American Mineralogist: 67: 854.; American Mineralogist: 70: 214
      • Wolfach
        • Oberwolfach
          • Rankach valley
Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
  • Saxony
    • Erzgebirge
      • Marienberg District
        • Lauta
Hajek, W. (2010): Kristallwelten Marienberg. Weise Verlag, München.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza 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.
            • Hilarion area
Fritz Schreiber collection
        • Elafos area
Lapis, 24, 7/8 (1999)
  • Macedonia Department
    • Serres Prefecture
      • Alistrati
Seemann, R., Niedermayr, G. & Brandstätter, F. (2008): Mineralien aus dem Eisen- und Farberdebergbau von Livadista bei Alistrati. Mineralien-Welt 19 (2), 34-54.
Norway
 
  • Nordland
    • Sørfold
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.
Spain
 
  • Murcia
    • Mazarrón
      • Pastrana
Jordi Fabre
USA
 
  • Utah
    • Juab Co.
      • East Tintic Mts
        • Tintic District
          • Eureka
Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
Mineral and/or Locality  
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