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Harstigite

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Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden
© Ö. Österberg

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Formula:
Ca
 
6
(Mn,Mg)Be
 
4
Si
 
6
(O,OH)
 
24
System:OrthorhombicHardness:5½
Name:For the locality.
This page provides mineralogical data about Harstigite.

Classification of Harstigite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/C.21-10
Nickel-Strunz 10th (pending) edition ID:9.BF.05

9 : SILICATES (Germanates)
B : Sorosilicates
F : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in tetrahedral [4] and greater coordination
Dana 8th edition ID:57.1.1.2

57 : SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
1 : Insular Si3O10 and Larger Noncyclic Groups with [Si3O10] groups
Hey's CIM Ref.:14.3.20

14 : Silicates not Containing Aluminum
3 : Silicates of Be
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Type Occurrence of Harstigite

Type Locality:Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden
General Appearance of Type Material:Small stout prismatic crystals without cleavage.
Place of Conservation of Type Material:Swedish Natural History Museum
Year of Discovery:1886
Geological Setting of type material:Open vein in hausmannite and dolomite.

Physical Properties of Harstigite

Hardness (Mohs):5½
Cleavage:None Observed
Density (measured):3.049 g/cm3
Density (calculated):3.19 g/cm3

Crystallography of Harstigite

Crystal System:Orthorhombic
Cell Parameters:a = 13.9Å, b = 13.62Å, c = 9.68Å
Ratio:a:b:c = 1.021 : 1 : 0.711
Unit Cell Volume:V 1,832.60 ų (Calculated from Unit Cell)

Optical Data of Harstigite

Type:Biaxial (+)
RI values: nα = 1.678 nβ = 1.680 nγ = 1.683
2V:Measured: 52° , Calculated: 80°
Maximum Birefringence:δ = 0.005

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

Chemical Properties of Harstigite

Formula:
Ca
 
6
(Mn,Mg)Be
 
4
Si
 
6
(O,OH)
 
24
Essential elements:Be, Ca, Mn, O, Si
All elements listed in formula:Be, Ca, H, Mg, Mn, O, Si
Common Impurities:F

Relationship of Harstigite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.BF.10Samfowlerite
Ca
 
28
Mn
 
6
Zn
 
4
(Be,Zn)
 
4
Be
 
12
[(OH)
 
3
|(SiO
 
4
)
 
3
|(Si
 
2
O
 
7
)
 
2
]
 
4
9.BF.15Davreuxite
MnAl
 
6
Si
 
4
O
 
17
(OH)
 
2
9.BF.20Queitite
Pb
 
4
Zn
 
2
(SO
 
4
)(SiO
 
4
)(Si
 
2
O
 
7
)
Related Minerals - Hey's Index Grouping:

- +
14.3.1Phenakite
Be
 
2
SiO
 
4
14.3.2Bertrandite
Be
 
4
(Si
 
2
O
 
7
)(OH)
 
2
14.3.3Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
 · H
 
2
O
14.3.4Liberite
Li
 
2
BeSiO
 
4
14.3.5Chkalovite
Na
 
2
BeSi
 
2
O
 
6
14.3.6Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
 · H
 
2
O
14.3.7Epididymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
 · H
 
2
O
14.3.8Gugiaite
Ca
 
2
Be(Si
 
2
O
 
7
)
14.3.9Jeffreyite
(Ca,Na)
 
2
(Be,Al)(Si
 
2
O
 
7
,HSi
 
2
O
 
7
)
14.3.10Semenovite-(Ce)
Na
 
8
Ca
 
2
FeBe
 
6
Ce
 
2
Si
 
14
O
 
40
(OH)
 
4
F
 
4
14.3.11Barylite
Be
 
2
Ba(Si
 
2
O
 
7
)
14.3.12Hingganite-(Ce)
(Ce,REE)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.13Hingganite-(Yb)
(Yb,Y,REE)
 
2
□Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.14Hingganite-(Y)
(Y,REE,Ca)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.15Minasgeraisite-(Y)
CaBe
 
2
Y
 
2
Si
 
2
O
 
10
14.3.16Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
14.3.17Trimerite
CaMn
2+
2
Be
 
3
(SiO
 
4
)
 
3
14.3.18Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
 · 2H
 
2
O
14.3.19Tvedalite
(Ca,Mn)
 
4
Be
 
3
Si
 
6
O
 
17
(OH)
 
4
 · 3H
 
2
O
14.3.21Sverigeite
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
14.3.22Joesmithite
{Pb}{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Be
 
2
Si
 
6
O
 
22
)(OH)
 
2
14.3.23Gadolinite-(Y)
Y
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.24Gadolinite-(Ce)
(Ce,La,Nd,Y)
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.25Calciogadolinite-(Y)
(YCa)
 
2
Fe
3+
 
Be
 
2
[SiO
 
4
]
 
2
O
 
2

Other Names for Harstigite

Other Languages:
German:Harstigit
Russian:Гарстигит
Simplified Chinese:镁柱石
Spanish:Harstigita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Harstigite

Reference List:

- +
American Mineralogist: 53: 309-315.

Zeitschrift für Kristallographie: 177: 143-148.

Internet Links for Harstigite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Harstigite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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    • Localities for Harstigite

    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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Campania
      • Phlegrean Volcanic Complex
        • Salerno Province
          • Nocera
            • Lavorate
    		Carati, M., (????): I minerali degli inclusi metamorfosati nel tufo grigio campano, ???
    Sweden
     
    • Värmland
      • Filipstad
        • Persberg district
          • Pajsberg
    		Flink, G. (1886): Mineralogiska notiser 1. Harstigit från Pajsberg. Bihang till Kongl. Vetenskaps-Akademiens Förhandlingar 12 (II): 59-63
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds 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: 18th Jun 2011 09:55:49
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