Ikaite Mineral Data

Ikaite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[Mineral Forums] [Minerals for Sale] [About Us] [En Espanol] [Mineral Gallery]
Fabre Minerals - Europe's first Internet mineral dealer, on the web since 1996


General Ikaite Information

Help on Chemical Formula: Chemical Formula: CaCO3•6(H2O)
Help on Composition: Composition: Molecular Weight = 208.18 gm
   Calcium   19.25 %  Ca   26.94 % CaO
   Hydrogen   5.81 %  H    51.92 % H2O
   Carbon     5.77 %  C    21.14 % CO2
   Oxygen    69.17 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca(CO3)•6(H2O)
Help on Environment: Environment: In cold, saline marine waters where the formation of calcite is inhibited. Decomposes into water and calcite above 8 deg. C.
Help on IMA Status: IMA Status: Approved IMA 1963
Help on Locality: Locality: Ika Fjord, Ivigtut, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Ikaite Say IKAITE
Help on Synonym: Synonym: Fundylite (calcite pseudomorphs)
  Glendonite (calcite pseudomorphs)
  ICSD 31305
  Jarrowite (calcite pseudomorphs)
  PDF 37-416
  Thinolite (calcite pseudomorphs)
 

Ikaite Image

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

Ikaite

Comments: Rounded, colorless crystals of ikaite extracted from Antarctic sea ice cores. Ikaite may be more common than previously thought.
Location: Southern sea near the Antarctic shore. Scale: See Image.
© Geophyscial Research Letters

Ikaite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0777:1:1.339
Help on Cell Dimensions: Cell Dimensions: a = 8.87, b = 8.23, c = 11.02, Z = 4; beta = 110.2° V = 754.98 Den(Calc)= 1.83
Help on Crystal System: Crystal System: MonoclinicSpace Group: C 2/c or Cc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.17(1), 2.64(0.9), 2.63(0.7),2.8(0.5), 2.46(0.3), 2.61(0.3), 4.16(0.3), 5.85(0.3), 4.16(0.3),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 2 2 1) ( 1 1 0) ( 1 1 0) ( 2 2 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Ikaite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Hesse K F , Kuppers H , Suess E , Zeitschrift fur Kristallographie , 163 (1983) p.227-231, Refinement of the structure of ikaite, CaCO3*6(H2O), Locality: Bransfield Strait, Antarctica

 

Physical Properties of Ikaite

Help on Color: Color: Chalky white.
Help on Density: Density: 1.77 - 1.8, Average = 1.78
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Ikaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2801,KPDmeas= 0.2872,KC= 0.2777
Ncalc = 1.49 - 1.51
Help on Optical Data: Optical Data: Biaxial (-), a=1.455, b=1.538, g=1.545, bire=0.0900, 2V(Calc)=30, 2V(Meas)=45. Dispersion distinct.
 

Calculated Properties of Ikaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.93 gm/cc
note: Specific Gravity of Ikaite =1.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012352742
Boson Index = 0.9987647258
Help on Photoelectric: Photoelectric: PEIkaite = 2.49 barns/electron
U=PEIkaite x rElectron Density= 4.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ikaite is Not Radioactive
 

Ikaite Classification
Help on Dana Class: Dana Class: 15.01.04.01 (15)Hydrated Carbonates
  (15.01)where A+ (XO3) · x(H2O)
  (15.01.04)Dana Group
 
15.01.04.01 Ikaite CaCO3•6(H2O) C 2/c or Cc Mono
Help on Strunz Class: Strunz Class: 05.CB.25 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CB -With large cations (alkali and alkali-earth carbonates)
 
05.CB.25 Ikaite CaCO3•6(H2O) C 2/c or Cc Mono
 

Other Ikaite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Ikaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Ikaite using:

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

Visit our Advertisers for Ikaite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Ikaite Mineral Data :

Ask about Ikaite 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 Espaņol

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

Ikaite

CaCO3•6(H2O)
Dana No: 15.01.04.01 Strunz No: 05.CB.25
Locality:

 

Notes: