Alumohydrocalcite Mineral Data + Say ALUMOHYDROCALCITE


[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Alumohydrocalcite Information

Help on Chemical  Formula: Chemical Formula: CaAl2(CO3)2(OH)4·3(H2O)
Help on Composition: Composition: Molecular Weight = 336.13 gm
   Calcium   11.92 %  Ca   16.68 % CaO
   Aluminum  16.05 %  Al   30.33 % Al2O3
   Hydrogen   3.00 %  H    26.80 % H2O
   Carbon     7.15 %  C    26.19 % CO2
   Oxygen    61.88 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaAl2(CO3)2(OH)4·3(H2O)
Help on Environment: Environment: Secondary mineral associated with allophane.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1926
Help on Locality: Locality: Khakassky district, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its chemical composition.
 

Alumohydrocalcite Image

Click Here for Larger Alumohydrocalcite Image in a New Browser Window Images:
Click Here for Larger Alumohydrocalcite Image

Alumohydrocalcite

Comments: Pinkish-white globular aggregates of alumohydrocalcite.
Location: Carriere de Richelle, Vise, Belgium. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Alumohydrocalcite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4494:1:0.3927
Help on Cell Dimensions: Cell Dimensions: a = 6.498, b = 14.457, c = 5.678, Z = 2; alpha = 95.83°, beta = 93.23°, gamma = 82.24° V = 524.95 Den(Calc)= 2.13
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.25(1), 6.5(0.7), 3.23(0.6),
 

Physical Properties of Alumohydrocalcite

Help on Cleavage: Cleavage: [100] Perfect, [010] Imperfect
Help on Color: Color: Chalky white, Bluish white, Violet, Light yellow, Gray.
Help on Density: Density: 2.23
Help on Diaphaniety: Diaphaniety: Transparent to subtranslucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Alumohydrocalcite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2549,KPDmeas= 0.2434,KC= 0.2442
Help on Optical Data: Optical Data: Biaxial (-), a=1.485-1.502, b=1.553-1.562, g=1.57-1.585, bire=0.0830-0.0850, 2V(Calc)=50-60, 2V(Meas)=64.
 

Calculated Properties of Alumohydrocalcite

Help on Electron Density: Electron Density:

relectron=2.28 gm/cc
note: rAlumohydrocalcite =2.23 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00124
Boson Index = 0.99876
Help on Photoelectric: Photoelectric:

PEAlumohydrocalcite = 2.07 barns/electron
U=PEAlumohydrocalcite x relectron= 4.73 barns/cc.

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

Alumohydrocalcite is Not Radioactive

 

Alumohydrocalcite Classification

Help on  Dana Class: Dana Class: 16b.2.3.1 (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.04-30 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 Alumohydrocalcite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Dana8) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Alumohydrocalcite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris

Search for Alumohydrocalcite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Alumohydrocalcite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Alumohydrocalcite Mineral Data :

Ask about Alumohydrocalcite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Alumohydrocalcite

CaAl2(CO3)2(OH)4·3(H2O)
Dana No: 16b.2.3.1 Strunz No: V/E.04-30
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links