Shortite Mineral Data

Shortite Mineral Data
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General Shortite Information

Help on Chemical Formula: Chemical Formula: Na2Ca2(CO3)3
Help on Composition: Composition: Molecular Weight = 306.16 gm
   Sodium   15.02 %  Na   20.24 % Na2O
   Calcium  26.18 %  Ca   36.63 % CaO
   Carbon   11.77 %  C    43.12 % CO2
   Oxygen   47.03 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2Ca2(CO3)3
Help on Environment: Environment: Associated with trona.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1940
Help on Locality: Locality: Drill cores from the Green River formation, Wyoming and Utah. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Maxwell Naylor Short (1889-1952), professor of mineralogy, University of Arizona.
Help on Name Pronunciation: Name Pronunciation: Shortite Say SHORTITE
Help on Synonym: Synonym: ICSD 16495
  PDF 21-1348
 

Shortite Image

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Shortite

Comments: Colorless crystal of shortite on matrix.
Location: Green River Formation, Sweetwater Co., Wyoming, USA. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag
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Shortite

Comments: Triangular shortite crystal in kerogenaceous dolomitic marlstone from the saline zone in the Green River Formation.
Location: Green River, Sweetwater Co., Wyoming, USA. Scale: Crystal Size 2 mm.
© Tom Loomis / Dakota Matrix

Shortite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4497:1:0.6455
Help on Cell Dimensions: Cell Dimensions: a = 4.961, b = 11.03, c = 7.12, Z = 2; V = 389.61 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Amm2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.562(1), 4.96(0.7), 5.52(0.7),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
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I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
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Forms: ( 0 1 0) ( 0 1 1) ( 1 0 0) ( 0 0 1)

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

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Dickens B , Hyman A , Brown W E , Journal of Research of the National Bureau of Standards - Physics and Chemistry , 75A (1971) p.129-135, Crystal structure of Ca2Na2(CO3)3 (shortite), Note: Y- and z-coordinates of Ca adjusted to match reported bond lengths

 

Physical Properties of Shortite

Help on Cleavage: Cleavage: {010} Distinct
Help on Color: Color: Colorless, Light yellow.
Help on Density: Density: 2.6
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Fluorescent, Short UV=amber, Long UV=amber.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Shortite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.029 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2115,KPDmeas= 0.2123,KC= 0.2064
Ncalc = 1.54
Help on Optical Data: Optical Data: Biaxial (-), a=1.531, b=1.555, g=1.57, bire=0.0390, 2V(Calc)=74, 2V(Meas)=75. Dispersion r < v moderate.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Shortite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.59 gm/cc
note: Specific Gravity of Shortite =2.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0018738082
Boson Index = 0.9981261918
Help on Photoelectric: Photoelectric: PEShortite = 3.61 barns/electron
U=PEShortite x rElectron Density= 9.35 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shortite is Not Radioactive
 

Shortite Classification
Help on Dana Class: Dana Class: 14.04.01.01 (14)Anhydrous Carbonates
  (14.04)with Compound Formula A+2 B++2 (CO3)4
  (14.04.01)Dana Group
 
14.04.01.01 Shortite Na2Ca2(CO3)3 Amm2 mm2
Help on Strunz Class: Strunz Class: 05.AC.25 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AC -Alkali and alkali-earth carbonates
 
05.AC.25 Shortite Na2Ca2(CO3)3 Amm2 mm2
 

Other Shortite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Shortite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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Ask about Shortite here :
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Rockhounds Discussion Group on Yahoo Groups
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Print or Cut-and-Paste your Shortite Specimen Label here :

Shortite

Na2Ca2(CO3)3
Dana No: 14.04.01.01 Strunz No: 05.AC.25
Locality:

 

Notes: