Mineralogy Database

Hemimorphite Mineral Data

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General Hemimorphite Information

Help on Chemical  Formula: Chemical Formula: Zn4Si2O7(OH)2•(H2O)
Help on Composition: Composition: Molecular Weight = 481.76 gm
   Zinc      54.29 %  Zn   67.58 % ZnO
   Silicon   11.66 %  Si   24.94 % SiO2
   Hydrogen   0.84 %  H     7.48 % H2O
   Oxygen    33.21 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn4Si2O7(OH)2•(H2O)
Help on Environment: Environment: Veins and beds in stratified calcareous rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1853
Help on Locality: Locality: Nerchinak in Transbaikalia, Siberia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the hemimorphic nature of the crystals.
Help on Name Pronunciation: Name Pronunciation: Hemimorphite + Pronunciation Say HEMIMORPHITE
Help on Synonym: Synonym: Calamine
  Galmei
  ICSD 30012
  PDF 5-555
  Zinc silicate
 

Hemimorphite Image

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  Hemimorphite

Comments: Lustrous, mostly colorless to slightly reddish-brown hemimorphite crystals, the largest 13 x 20 x 2 mm in size.
Location: Santa Eulalia, Chihuahua, Mexico. Scale: 25 x 10 x 25 mm.
© Dan Weinrich

Hemimorphite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7808:1:0.4776
Help on Cell Dimensions: Cell Dimensions: a = 8.37, b = 10.719, c = 5.12, Z = 2; V = 459.36 Den(Calc)= 3.48
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Imm2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.104(1), 6.6(0.86), 3.288(0.75),
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: ( 3 0 1) ( 1 0 0) ( 0 1 0) ( 1 1 0) ( 0 3 1) ( 1 2 1) ( 0 0 1)

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Physical Properties of Hemimorphite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Brown, Colorless, Greenish gray, Yellow brown, White.
Help on Density: Density: 3.4 - 3.5, Average = 3.45
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 Habit: Habit: Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite).
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: Fluorescent, Short UV=dull white, Long UV=dull white.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Hemimorphite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1788,KPDmeas= 0.1804,KC= 0.1841
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (+), a=1.614, b=1.617, g=1.636, bire=0.0220, 2V(Calc)=44, 2V(Meas)=46. Dispersion none.
 

Calculated Properties of Hemimorphite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.32 gm/cc
note: Specific Gravity of Hemimorphite =3.45 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEHemimorphite = 27.43 barns/electron
U=PEHemimorphite x rElectron Density= 91.14 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hemimorphite is Not Radioactive
 

Hemimorphite Classification

Help on  Dana Class: Dana Class: 56.01.02.01 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.01)with cations in [4] coordination
  (56.01.02)Dana Group
 
56.01.02.01 Hemimorphite Zn4Si2O7(OH)2•(H2O) Imm2 mm2
Help on  Strunz Class: Strunz Class: 09.BD.10 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BD -Si2O7 groups with additional anions;
 
09.BD.10 Hemimorphite Zn4Si2O7(OH)2•(H2O) Imm2 mm2
 

Other Hemimorphite Information

Help on References: References: NAME( Mason68) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Mason68)
Help on See Also: See Also: Links to other databases for Hemimorphite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - GeoScienceWorld
10 - Glendale Community College
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - MinDAT
16 - Mineralienatlas (Deutsch)
17 - Online Mineral Museum
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - WWW-MINCRYST
21 - YupRocks

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

Hemimorphite

Zn4Si2O7(OH)2•(H2O)
Dana No: 56.01.02.01 Strunz No: 09.BD.10
Locality:

 

Notes:

 

 
   
 


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