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Harstigite

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Harstigen Mine, Pajsberg, Filipstad, Värmland, Sweden
© K.Gatedal

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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, 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
[(OH)
 
2
|Si
 
2
O
 
7
]
14.3.3Beryllite
Be
 
3
[(OH)
 
2
|SiO
 
4
] · H
 
2
O
14.3.4Liberite
Li
 
2
Be[SiO
 
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
 
6
(O,OH)]
14.3.10Semenovite-(Ce)
(Na,Ca)
 
9
Fe
2+
 
(Ce,La)
 
2
[(Si,Be)
 
5
(O,OH,F)
 
12
]
 
4
14.3.11Barylite
BaBe
 
2
[Si
 
2
O
 
7
]
14.3.12Hingganite-(Ce)
Ce
 
2
□Be
 
2
Si
 
2
O
 
8
(OH)
 
2
14.3.13Hingganite-(Yb)
(Yb,Y)Be[OH|SiO
 
4
]
14.3.14Hingganite-(Y)
(Y,Yb,Er)Be[OH|SiO
 
4
]
14.3.15Minasgeraisite-(Y)
Y
 
2
CaBe
 
2
[O|SiO
 
4
]
 
2
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
Si
 
3
O
 
12
(OH)
14.3.22Joesmithite
[(Ca,Pb)][(Ca,Pb)
 
2
][(Mg,Fe
2+
 
)
 
5
][(OH)
 
2
|BeSi
 
7
O
 
22
]
14.3.23Gadolinite-(Y)
Y
 
2
Fe
2+
 
Be
 
2
[O|SiO
 
4
]
 
2
14.3.24Gadolinite-(Ce)
(Ce,La,Nd,Y)
 
2
Fe
2+
 
Be
 
2
[O|SiO
 
4
]
 
2
14.3.25Calciogadolinite
(Y,Ca)
 
2
(Fe,Fe)Be
 
2
Si
 
2
(O,OH)
 
10

Other Names for Harstigite

Other Languages:
German:Harstigit
Russian:Гарстигит
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.

Articles/Blogs about Harstigite

Internet Links for Harstigite

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  • Raman and XRD data at RRUFF project
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    Localities for Harstigite

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    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.
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    (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
          • Sarno
            • Lavorate (Nocera)
    		Carati, M., (????): I minerali degli inclusi metamorfosati nel tufo grigio campano, ???
    Sweden
     
    • Värmland
      • Filipstad
        • Pajsberg
    		KVA handl., bihang,(1886) 12, 59-63
    Mineral and/or Locality
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