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Syngenite Mineral Data

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General Syngenite Information

Help on Chemical  Formula: Chemical Formula: K2Ca(SO4)2•(H2O)
Help on Composition: Composition: Molecular Weight = 328.42 gm
   Potassium  23.81 %  K    28.68 % K2O
   Calcium    12.20 %  Ca   17.08 % CaO
   Hydrogen    0.61 %  H     5.49 % H2O
   Sulfur     19.53 %  S    48.76 % SO3
   Oxygen     43.85 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Ca(SO4)2•(H2O)
Help on Environment: Environment: Diagenetic component of marine salt deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1872
Help on Locality: Locality: Kalush salt deposit, Ukraine. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for related, for the chemical resemblance to polyhalite.
Help on Name Pronunciation: Name Pronunciation: Syngenite + Pronunciation Say SYNGENITE
Help on Synonym: Synonym: ICSD 27748
  PDF 28-739
 

Syngenite Image

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  Syngenite

Comments: Opaque platy crystal syngenite rosette on massive white halite.
Location: Sigmundshall Mine, Bokelch, Hannover, Niedersachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Syngenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.3394:1:0.8415
Help on Cell Dimensions: Cell Dimensions: a = 9.55, b = 7.13, c = 6, Z = 2; beta = 105° V = 394.63 Den(Calc)= 2.76
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1), 3.16(0.75), 9.52(0.6),
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: ( 1 0 1) ( 3 1 0) ( 0 1 1) ( 1 0 0) ( 0 0 1)

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Physical Properties of Syngenite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Colorless, White, Light yellow.
Help on Density: Density: 2.58
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Syngenite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.059 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1854,KPDmeas= 0.1983,KC= 0.197
Ncalc = 1.51 - 1.54
Help on Optical Data: Optical Data: Biaxial (-), a=1.501, b=1.5166, g=1.5176, bire=0.0166, 2V(Calc)=28, 2V(Meas)=28.3. Dispersion relatively strong.
 

Calculated Properties of Syngenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.58 gm/cc
note: Specific Gravity of Syngenite =2.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0018692654
Boson Index = 0.9981307346
Help on Photoelectric: Photoelectric: PESyngenite = 5.05 barns/electron
U=PESyngenite x relectron= 13.00 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 343.09 (Gamma Ray American Petroleum Institute Units)
Concentration of Syngenite per GRapi unit = 0.29 (%)

Estimated Radioactivity from Syngenite - barely detectable

 

Syngenite Classification

Help on  Dana Class: Dana Class: 29.03.01.01 (29)Hydrated Acid and Sulfates
  (29.03)where (A+)2 B (XO4)2 � x(H2O)
  (29.03.01)Dana Group
 
29.03.01.01 Syngenite K2Ca(SO4)2•(H2O) P 21/m 2/m
 
29.03.01.02 Koktaite (NH4)2Ca(SO4)2•(H2O) P 21/m 2/m
Help on  Strunz Class: Strunz Class: 07.CD.35 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CD -With only large cations
 
07.CD.35 Koktaite (NH4)2Ca(SO4)2•(H2O) P 21/m 2/m
 
07.CD.35 Syngenite K2Ca(SO4)2•(H2O) P 21/m 2/m
 

Other Syngenite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Syngenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Syngenite

K2Ca(SO4)2•(H2O)
Dana No: 29.03.01.01 Strunz No: 07.CD.35
Locality:

 

Notes:

 

 
   
 


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