Mindat Logo

Hemimorphite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
Zn
 
4
Si
 
2
O
 
7
(OH)
 
2
· H
 
2
O
System:OrthorhombicColour:Colorless, white, pale ...
Hardness:4½ - 5
Name:
Named in 1853 by Adolph Kenngott in allusion to the hemimorphic morphology of the crystals. Many names were assigned to this species previously including calamine.


Visit gemdat.org for gemological information about Hemimorphite. Currently in public beta-test.

Classification of Hemimorphite

IMA status:Approved
Strunz 8th edition ID:8/C.08-10
Nickel-Strunz 10th (pending) edition ID:9.BD.10

9 : SILICATES (Germanates)
B : Sorosilicates
D : Si2O7 groups, with additional anions; cations in tetrahedral [4] and greater coordination
Dana 8th edition ID:56.1.2.1

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
1 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hey's CIM Ref.:14.7.12

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn
mindat.org URL:http://www.mindat.org/min-1860.html
Please feel free to link to this page.

Type Occurrence of Hemimorphite

Type Locality:Băiţa Mining District (Baita Bihor; Rézbánya), Nucet, Bihor Co., Romania
Year of Discovery:1853

Occurrences of Hemimorphite

Geological Setting:Secondary mineral in the weathered portions of zinc deposits.

Physical Properties of Hemimorphite

Lustre:Adamantine, Vitreous, Silky, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colorless, white, pale blue, pale green, gray, brown
Streak:White
Hardness (Mohs):4½ - 5
Tenacity:Brittle
Cleavage:Perfect
Perfect on {110}, poor on {101}, {001} rare
Fracture:Irregular/Uneven, Sub-Conchoidal
Density (measured):3.475 g/cm3
Density (calculated):3.484 g/cm3

Crystallography of Hemimorphite

Crystal System:Orthorhombic
Class (H-M):mm2 - Pyramidal
Space Group:Imm2
Cell Parameters:a = 8.367(5) Å, b = 10.73Å, c = 5.155(3) Å
Ratio:a:b:c = 0.78 : 1 : 0.48
Unit Cell Volume:V 462.81 ų (Calculated from Unit Cell)
Z:2
Morphology:Thin tabular crystals, sheaf-like or fan-like aggregates, stalagtitic, mammillary, botryoidal.
Twinning:On {101} rare
Crystal Atlas:
Image Loading
Click on an icon to view
Hemimorphite no.2 - Goldschmidt (1913-1926)
Hemimorphite no.33 - Goldschmidt (1913-1926)
Hemimorphite no.91 - Goldschmidt (1913-1926)

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Hemimorphite

Type:Biaxial (+)
RI values: nα = 1.614 nβ = 1.617 nγ = 1.636
2V:Measured: 46° , Calculated: 44°
Maximum Birefringence:δ = 0.022

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:strong r > v

Chemical Properties of Hemimorphite

Formula:
Zn
 
4
Si
 
2
O
 
7
(OH)
 
2
· H
 
2
O
Simplified for copy/paste:Zn4Si2O7(OH)2·H2O
Essential elements:H, O, Si, Zn
All elements listed in formula:H, O, Si, Zn
Common Impurities:Cu,Fe

Relationship of Hemimorphite to other Species

Common Associates:
SphaleriteSmithsoniteRosasiteHydrozinciteGalena
ChrysocollaCerussiteCalciteAurichalciteAnglesite
Related Minerals - Nickel-Strunz Grouping):

- +
9.BD.05Bertrandite
Be
 
4
(Si
 
2
O
 
7
)(OH)
 
2
9.BD.15Junitoite
CaZn
 
2
Si
 
2
O
 
7
· H
 
2
O
9.BD.20Axinite-(Fe)
Ca
 
2
Fe
2+
 
Al
 
2
BSi
 
4
O
 
15
OH
9.BD.20Axinite-(Mg)
Ca
 
2
MgAl
 
2
BSi
 
4
O
 
15
OH
9.BD.20Axinite-(Mn)
Ca
 
2
Mn
2+
 
Al
 
2
BSi
 
4
O
 
15
(OH)
9.BD.20Tinzenite
(CaMn
2+
 
)
 
2
Mn
2+
 
Al
 
2
BSi
 
4
O
 
15
(OH)
9.BD.25Vistepite
SnMn
 
4
B
 
2
Si
 
4
O
 
16
(OH)
 
2
9.BD.30Boralsilite
Al
 
16
B
 
6
Si
 
2
O
 
37
9.BD.35Werdingite
(Mg,Fe)
 
2
Al
 
14
Si
 
4
B
 
4
O
 
37
Related Minerals - Hey's Index Grouping:

- +
14.7.1Sanbornite
Ba
 
2
(Si
 
4
O
 
10
)
14.7.2Krauskopfite
BaSi
 
2
O
 
5
· 3H
 
2
O
14.7.3Walstromite
BaCa
 
2
(Si
 
3
O
 
9
)
14.7.4Macdonaldite
BaCa
 
4
Si
 
16
O
 
36
(OH)
 
2
· 10H
 
2
O
14.7.5Ericssonite
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
14.7.6Ericssonite-2O
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
14.7.7Gillespite
BaFe
2+
 
[Si
 
4
O
 
10
]
14.7.8Andrémeyerite
BaFe
2+
2
(Si
 
2
O
 
7
)
14.7.9Pellyite
Ba
 
2
Ca(Fe,Mg)
 
2
Si
 
6
O
 
17
14.7.10Taikanite
Sr
 
3
BaMn
2+
2
(Si
 
4
O
 
12
)O
 
2
14.7.11Willemite
Zn
 
2
SiO
 
4
14.7.13Zincsilite
Zn
 
3
(Si
 
4
O
 
10
)(OH)
 
2
· 4H
 
2
O
14.7.14Hardystonite
Ca
 
2
Zn(Si
 
2
O
 
7
)
14.7.15Petedunnite
Ca(Zn,Mn
2+
 
,Mg,Fe
2+
 
)Si
 
2
O
 
6
14.7.16Clinohedrite
CaZn(SiO
 
4
) · H
 
2
O
14.7.17Junitoite
CaZn
 
2
Si
 
2
O
 
7
· H
 
2
O
14.7.18Larsenite
PbZnSiO
 
4
14.7.19Esperite
PbCa
 
2
Zn
 
3
(SiO
 
4
)
 
3
14.7.20Hodgkinsonite
Mn
2+
 
Zn
 
2
(SiO
 
4
)(OH)
 
2
14.7.21Gerstmannite
MnMgZn(SiO
 
4
)(OH)
 
2
14.7.22Gageite
Mn
 
21
(Si
 
4
O
 
12
)
 
2
O
 
3
(OH)
 
20
14.7.23Franklinfurnaceite
Ca
 
2
Fe
3+
 
Mn
2+
3
Mn
3+
 
(Zn
 
2
Si
 
2
O
 
10
)(OH)
 
8

Other Names for Hemimorphite

Synonyms:
CalaminaElectric CalamineKieselgalmeiKieselgalmeySmithsonite (of Brooke and Miller)
Wagite
Other Languages:
Dutch:Hemimorfiet
German:Hemimorphit
Daviesit
Gemeiner Galmei
Kieselzinkerz
Kieselzinkspat
Wagit
Zinkglas
Zinkkieselerz
Hebrew:המימורפיט
Italian:Emimorfite
Japanese:異極鉱
Polish:Hemimorfit
Portuguese:Hemimorfita
Russian:Гемиморфит
Simplified Chinese:异极矿
Spanish:Hemimorfita
Daviesita
Hemimorphita
Wagita
Ukrainian:Геміморфіт

Other Information

Fluorescence in UV light:May be bluish under SW UV.
Electrical:Pyroelectric
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:Ore of zinc.

References for Hemimorphite

Reference List:

- +
Zeitschrift für Kristallographie: 159: 47-48.

Zeitschrift für Kristallographie: 146: 241-259.

European Journal of Mineralogy: 9: 803-810.

Internet Links for Hemimorphite

Search Engines:
  • Look for Hemimorphite on Google
  • Look for Hemimorphite images on Google
  • External Links:
  • Look for Hemimorphite on Webmineral
  • Look for Hemimorphite on Athena Mineralogy
  • Look for Hemimorphite on Wikipedia
  • Look for Hemimorphite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Hemimorphite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Fine and rare minerals from mintreasure.com
  • Buy from McDougall Minerals
  • Fabre Minerals - search for Hemimorphite specimens
  • rare and unusual minerals mainly crystallized
  • Search for Hemimorphite on Well-Arranged Molecules
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Hemimorphite specimens for sale - minfind.com
  • Buy RARE Minerals from Rocks of Africa
  • The Arkenstone - Fine Minerals
  • Fine minerals from bisbeeborn.com
  • Wilensky Fine Minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Specimens:The following Hemimorphite specimens are currently listed for sale on minfind.com.

    Localities for Hemimorphite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: July 27, 2014 21:43:02
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds