Cabalzarite Mineral Data

Cabalzarite Mineral Data

General Cabalzarite Information

Chemical Formula:

Ca(Mg,Al,Fe++)2(AsO4)2(H2O,OH)2

Composition:

Molecular Weight = 413.71 gm

Calcium 9.69 % Ca 13.55 % CaO

Magnesium 4.70 % Mg 7.79 % MgO

Manganese 0.66 % Mn 0.86 % MnO

Aluminum 5.22 % Al 9.86 % Al₂O₃

Iron 4.05 % Fe 5.21 % FeO

Arsenic 36.22 % As 55.56 % As₂O₅

Hydrogen 0.79 % H 7.05 % H₂O

Oxygen 38.67 % O

______ ______

100.00 % 99.88 % = TOTAL OXIDE

Empirical Formula:

CaAl_0.8Mg_0.8Fe²⁺_0.3Mn²⁺_0.05(AsO₄)₂(H₂O)_1.24(OH)_0.76

Environment:

In manganese ore in radiolarites. A member of the tusmcorite group.

IMA Status:

Approved IMA 2001 (Dana # Added)

Locality:

The abandoned manganese mine near Falotta, Graubunden, Switzerland. Link to MinDat.org Location Data.

Name Origin:

For Walter Cabalzar (1919-), an amateur mineralogist of Chur, Switzerland, who contributed to the mineralogy of the Graubunden canton.

Synonym:

ICSD 89713

IMA1997-012

Cabalzarite Image

Images:

Cabalzarite

Comments: Brownish crystals of cabalzarite on matrix.
Location: Falotta, Tinizong (Tinzen), Sursass (Oberhalbstein), Grischun (Grisons; Graub?nden), Switzerland. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Cabalzarite Crystallography

Axial Ratios:

a:b:c =1.4528:1:1.1968

Cell Dimensions:

a = 8.925, b = 6.143, c = 7.352, Z = 2; beta = 115.25° V = 364.57 Den(Calc)= 3.77

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.159(1)(112), 2.519(0.81)(221), 2.942(0.67)(201), 4.895(0.59)(110), 2.684(0.55)(311), 3.373(0.54)(202), 4.544(0.35)(111),

Crystal Structure:

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Brugger J , Meisser N , Schenk K , Berlepsch P , Bonin M , Armbruster T , Nyfeler D , Schmidt S , American Mineralogist , 85 (2000) p.1307-1314, Description and crystal structure of cabalzarite Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2,, a new mineral of the tsumcorite group, Locality: Falotta, Graubunden, Switzerland, Sample: CABA11.5, Lausanne

View Additional jPOWD Structure files for Cabalzarite
[1]

Physical Properties of Cabalzarite

Cleavage:

None

Color:

Light brown, Brownish pink, Orange brown.

Density:

3.89

Diaphaniety:

Transparent

Fracture:

Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Cabalzarite

Gladstone-Dale:

CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.02 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1936,KPDmeas= 0.1877,KC= 0.1899

Optical Data:

Biaxial (?), a=1.7, g=1.76, bire=0.0600

Calculated Properties of Cabalzarite

Electron Density:

r_electron=3.73 gm/cc
note: r_Cabalzarite=3.89 gm/cc.

Fermion Index

Fermion Index = 0.00587
Boson Index = 0.99413

Photoelectric:

PE_Cabalzarite= 27.38 barns/electron
U=PE_Cabalzarite x r_electron= 102.11 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cabalzarite is Not Radioactive

Cabalzarite Classification

Dana Class:

40.2.12.1 (40)Hydrated Phosphates, etc

(40.2)where A++ (B++)2 (XO4) · x(H2O)

(40.2.12)Dana Group

40.2.12.1 Cabalzarite ! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m

Strunz Class:

VII/C.31-06 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+

VII/C.31 - Mawbyite - Gartrellite series

VII/C.31-02 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-04 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-05 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-06 Cabalzarite Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m

VII/C.31-08 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-10 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-20 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono

VII/C.31-30 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-35 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-36 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-40 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m

VII/C.31-50 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m

VII/C.31-74 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m

VII/C.31-78 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1

VII/C.31-80 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1

VII/C.31-90 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri

VII/C.31-92 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1

VII/C.31-98 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1

VII/C.31-100 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1

Other Cabalzarite Information

References:

NAME( MinRec v. 32, p 211) PHYS. PROP.(MinRec v. 32, p 211) OPTIC PROP.(MinRec v. 32, p 211)

See Also:

Links to other databases for Cabalzarite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Print or Cut-and-Paste your Cabalzarite Specimen Label here :

Cabalzarite

Ca(Mg,Al,Fe++)2(AsO4)2(H2O,OH)2
Dana No: 40.2.12.1 Strunz No: VII/C.31-06
Locality:

Notes: