Aragonite Mineral Data + Say ARAGONITE

General Aragonite Information
Help on Chemical Formula: Chemical Formula: CaCO3
Help on Composition: Composition: Molecular Weight = 100.09 gm
   Calcium  40.04 %  Ca   56.03 % CaO
   Carbon   12.00 %  C    43.97 % CO2
   Oxygen   47.96 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca(CO3)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1790
Help on Locality: Locality: Aragon (Spain). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Synonym: Synonym: ICSD 15194
  Nicolsonite (Zn)
  PDF 41-1475
  Tarnowitzite (Pb)
 

Aragonite Image

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Aragonite

Comments: Clear, crystalline aragonite prism.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Aragonite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6223:1:0.7205
Help on Cell Dimensions: Cell Dimensions: a = 4.959, b = 7.968, c = 5.741, Z = 4; V = 226.85 Den(Calc)= 2.93
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.396(1), 1.977(0.65), 3.273(0.52),
Help on Forms: Forms:

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Forms: [ 0 0 1] [ 0 1 1] [ 0 1 0] [ 1 1 0]

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de Villiers J P R , American Mineralogist , 56 (1971) p.758-767, Crystal structures of aragonite, strontianite, and witherite

View Additional jPOWD Structure files for Aragonite
[1]
 

Physical Properties of Aragonite

Help on Cleavage: Cleavage: [010] Distinct
Help on Color: Color: Colorless, White, Gray, Yellowish white, Reddish white.
Help on Density: Density: 2.93
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Aragonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2157,KPDmeas= 0.2157,KC= 0.2104
Help on Optical Data: Optical Data: Biaxial (-), a=1.529-1.53, b=1.68-1.682, g=1.685-1.686, bire=0.1560, 2V(Calc)=16-18, 2V(Meas)=18-19. Dispersion weak, r < v.
Help on Pleochroism (x): Pleochroism (x): no.
 

Calculated Properties of Aragonite

Help on Electron Density: Electron Density:

relectron=2.93 gm/cc
note: rAragonite =2.93 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00209
Boson Index = 0.99791
Help on Photoelectric: Photoelectric:

PEAragonite = 5.06 barns/electron
U=PEAragonite x relectron= 14.81 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Aragonite is Not Radioactive
 

Aragonite Classification
Help on Dana Class: Dana Class: 14.1.3.1 (14)Anhydrous Carbonates
  (14.1)with Simple Formula A+ CO3
  (14.1.3)Aragonite Group (Orthorhombic: Pmcn)
 
14.1.3.1 Aragonite CaCO3 Pmcn 2/m 2/m 2/m
 
14.1.3.2 Witherite BaCO3 Pmcn 2/m 2/m 2/m
 
14.1.3.3 Strontianite SrCO3 Pmcn 2/m 2/m 2/m
 
14.1.3.4 Cerussite PbCO3 Pmcn 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: V/B.04-10 V - Nitrates, Carbonates and Borates
  V/B - Waterfree carbonates [CO3]2- without unfamiliar anions
  V/B.04 - Aragonite group
 
V/B.04-10 Aragonite CaCO3 Pmcn 2/m 2/m 2/m
 
V/B.04-20 Strontianite SrCO3 Pmcn 2/m 2/m 2/m
 
V/B.04-30 Witherite BaCO3 Pmcn 2/m 2/m 2/m
 
V/B.04-40 Cerussite PbCO3 Pmcn 2/m 2/m 2/m
 
V/B.04-50 Alstonite BaCa(CO3)2 P1 or P1 Tri
 
V/B.04-60 Barytocalcite BaCa(CO3)2 P 21 2
 
V/B.04-65 Olekminskite Sr(Sr,Ca,Ba)(CO3)2 P 321 3 2
 
V/B.04-70 Paralstonite BaCa(CO3)2 P 321 3 2
 

Other Aragonite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Aragonite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - EUROmin Project 9 - Franklin Minerals(Dunn) 10 - Franklin Minerals(Palache) 11 - Glendale Community College 12 -Google Images 13 -Google Scholar 14 -Handbook of Mineralogy (UofA) 15 - HyperPhysics 16 - HyperPhysics 17 -MinDAT 18 -MinMax(Deutsch) 19 -MinMax(English) 20 - Mineral and Gemstone Kingdom 21 -Mineralienatlas (Deutsch) 22 - Minerals of Wisconsin 23 -NSDL Reciprocal Net (JAVA) 24 - Philatelic Mineralogy 25 -QUT Mineral Atlas 26 - Scandinavian mineral gallery 27 -University of Colorado - Mineral Structure Data 28 - University of Manchester - Mineral Structure 29 - WWW-MINCRYST 30 - YupRocks 31 -theimage 32 -École des Mines de Paris

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Aragonite

CaCO3
Dana No: 14.1.3.1 Strunz No: V/B.04-10
Locality:

 

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