Para-alumohydrocalcite Mineral Data


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General Para-alumohydrocalcite Information

Help on Chemical  Formula: Chemical Formula: CaAl2(CO3)2(OH)4·6(H2O)
Help on Composition: Composition: Molecular Weight = 390.18 gm
   Calcium   10.27 %  Ca   14.37 % CaO
   Aluminum  13.83 %  Al   26.13 % Al2O3
   Hydrogen   4.13 %  H    36.94 % H2O
   Carbon     6.16 %  C    22.56 % CO2
   Oxygen    65.61 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaAl2(CO3)2(OH)4·6(H2O)
Help on Environment: Environment: Oxidized zone of sulfur deposits with gypsum and calcite.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Vodinsk, Ukraine, and Gaurdok, Turkmenistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its relationship with alumohydrocalcite.
 

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Para-alumohydrocalcite Crystallography

Help on Crystal System: Crystal System: Triclinic
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.9(1), 2.64(0.32), 6.2(0.3),
 

Physical Properties of Para-alumohydrocalcite

Help on Color: Color: White, Colorless.
Help on Density: Density: 2
Help on Diaphaniety: Diaphaniety: Transparent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Streak: Streak: white
 

Optical Properties of Para-alumohydrocalcite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.05 (Good) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2445,KC= 0.2575
Help on Optical Data: Optical Data: Biaxial (-), a=1.473, b=1.492, g=1.502, bire=0.0290, 2V(Calc)=70, 2V(Meas)=69.
Help on Pleochroism (x): Pleochroism (x): none.
Help on Pleochroism (y): Pleochroism (y): none.
Help on Pleochroism (z): Pleochroism (z): none.
 

Calculated Properties of Para-alumohydrocalcite

Help on Electron Density: Electron Density:

relectron=2.07 gm/cc
note: rPara-alumohydrocalcite =2.00 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00113
Boson Index = 0.99887
Help on Photoelectric: Photoelectric:

PEPara-alumohydrocalcite = 1.82 barns/electron
U=PEPara-alumohydrocalcite x relectron= 3.76 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Para-alumohydrocalcite is Not Radioactive

 

Para-alumohydrocalcite Classification

Help on  Dana Class: Dana Class: 16b.2.3.2 (16b)Carbonates - Hydroxyl or Halogen
  (16b.2)where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=3:2
  (16b.2.3)Dana Group
 
16b.2.3.1 Alumohydrocalcite CaAl2(CO3)2(OH)4·3(H2O) P1 1
 
16b.2.3.2 Para-alumohydrocalcite CaAl2(CO3)2(OH)4·6(H2O) Tri
Help on  Strunz Class: Strunz Class: V/E.04-40 V - Nitrates, Carbonates and Borates
  V/E - Water-bearing carbonates with unfamiliar anions
  V/E.04 - Scarbroite - Para-alumohydrocalcite series
 
V/E.04-10 Scarbroite Al5(CO3)(OH)13·5(H2O) P1 or P1 Tri
 
V/E.04-20 Hydroscarbroite Al14(CO3)3(OH)36·n(H2O) Tri
 
V/E.04-30 Alumohydrocalcite CaAl2(CO3)2(OH)4·3(H2O) P1 1
 
V/E.04-40 Para-alumohydrocalcite CaAl2(CO3)2(OH)4·6(H2O) Tri
 

Other Para-alumohydrocalcite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Para-alumohydrocalcite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas 10 -École des Mines de Paris

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Print or Cut-and-Paste your Para-alumohydrocalcite Specimen Label here :

Para-alumohydrocalcite

CaAl2(CO3)2(OH)4·6(H2O)
Dana No: 16b.2.3.2 Strunz No: V/E.04-40
Locality:

 

Notes:

 

 
   
 
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