Mineralogy Database

Hanksite Mineral Data

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General Hanksite Information

Help on Chemical  Formula: Chemical Formula: KNa22(SO4)9(CO3)2Cl
Help on Composition: Composition: Molecular Weight = 1,564.92 gm
   Potassium   2.50 %  K     3.01 % K2O
   Sodium     32.32 %  Na   43.57 % Na2O
   Carbon      1.54 %  C     5.62 % CO2
   Sulfur     18.44 %  S    46.05 % SO3
   Chlorine    2.27 %  Cl    2.27 % Cl
                -   %   Cl   -0.51 % -O=Cl2   
   Oxygen     42.94 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KNa22(SO4)9(CO3)2Cl
Help on Environment: Environment: Continental evaporite deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1885
Help on Locality: Locality: Searles Lake, San Bernardino Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for H. G. Hanks, American geologist.
Help on Name Pronunciation: Name Pronunciation: Hanksite Say HANKSITE
Help on Synonym: Synonym: ICSD 2852
  PDF 25-1348

Hanksite Image

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Comments: Translucent, hexagonal crystal of hanksite.
Location: Searles Lake, San Bernardino Co., California, USA. Scale: Crystal size 3 cm.
© Dave Barthelmy

Hanksite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.02483
Help on Cell Dimensions: Cell Dimensions: a = 10.47, c = 21.2, Z = 2; V = 2,012.61 Den(Calc)= 2.58
Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.61(1), 2.78(1), 3.78(1),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

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

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Hanksite

Help on Cleavage: Cleavage: {0001} Good
Help on Color: Color: Colorless, Gray, Grayish black, Yellow, Yellowish white.
Help on Density: Density: 2.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Fluorescent, Long UV=weak yellow.
Help on Luster: Luster: Vitreous - Greasy
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white

Optical Properties of Hanksite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1826,KPDmeas= 0.1884,KC= 0.1892
Ncalc = 1.47 - 1.49
Help on Optical Data: Optical Data: Uniaxial (-), e=1.461, w=1.481, bire=0.0200.

Calculated Properties of Hanksite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.46 gm/cc
note: Specific Gravity of Hanksite =2.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0017610757
Boson Index = 0.9982389243
Help on Photoelectric: Photoelectric: PEHanksite = 2.04 barns/electron
U=PEHanksite x relectron= 5.03 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 35.47 (Gamma Ray American Petroleum Institute Units)
Concentration of Hanksite per GRapi unit = 2.82 (%)

Estimated Radioactivity from Hanksite - barely detectable


Hanksite Classification

Help on  Dana Class: Dana Class: (32)Compound Sulfates
  (32.03)(anhydrous) with poly-anionic formula
  (32.03.01)Dana Group Hanksite KNa22(SO4)9(CO3)2Cl P 63/m 6/m
Help on  Strunz Class: Strunz Class: 07.BD.30 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BD -With only large cations
07.BD.30 Hanksite KNa22(SO4)9(CO3)2Cl P 63/m 6/m

Other Hanksite Information

Help on References: References: NAME( MinRec) 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 Hanksite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Glendale Community College
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

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Dana No: Strunz No: 07.BD.30





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