IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Harstigite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About HarstigiteHide

Formula:
Ca6(Mn,Mg)Be4Si6(O,OH)24
Colour:
Colorless
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.16
Crystal System:
Orthorhombic
Name:
Named by G. Flink in 1886 for the type locality, Harstigen mine, Sweden.
This page provides mineralogical data about Harstigite.


Classification of HarstigiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1886
9.BF.05

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

57 : SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
1 : Insular Si3O10 and Larger Noncyclic Groups with [Si3O10] groups
14.3.20

14 : Silicates not Containing Aluminum
3 : Silicates of Be

Physical Properties of HarstigiteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Colorless
Hardness:
5½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Splintery, Sub-Conchoidal
Density:
3.16 g/cm3 (Measured)    3.19 g/cm3 (Calculated)
Comment:
Measured value from Moore, P.B. (1968) Relation of the manganese-calcium silicates, gageite and harstigite: a correction. American Mineralogist: 53: 1418-1420.

Optical Data of HarstigiteHide

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

Formula:
Ca6(Mn,Mg)Be4Si6(O,OH)24
IMA Formula:
Ca6Be4Mn2+(SiO4)2(Si2O7)2(OH)2
Common Impurities:
F

Crystallography of HarstigiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 13.9 Å, b = 13.62 Å, c = 9.68 Å
Ratio:
a:b:c = 1.021 : 1 : 0.711
Unit Cell V:
1,832.60 ų (Calculated from Unit Cell)
Twinning:
Cruciform twin, composed of two orthorhombic individuals twinned on (110).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.35 (40)
3.545 (30)
3.222 (40)
2.817 (50)
2.788 (50)
2.695 (100)
2.268 (50)

Type Occurrence of HarstigiteHide

General Appearance of Type Material:
Small stout prismatic crystals without cleavage.
Place of Conservation of Type Material:
Swedish Natural History Museum
Geological Setting of Type Material:
Open vein in hausmannite and dolomite.
Associated Minerals at Type Locality:

Other Language Names for HarstigiteHide

German:Harstigit
Simplified Chinese:镁柱石
Spanish:Harstigita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Pennine1 photo of Harstigite associated with Pennine on mindat.org.
Spessartine1 photo of Harstigite associated with Spessartine on mindat.org.
Hematite1 photo of Harstigite associated with Hematite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.BF.10SamfowleriteCa28Mn6Zn4(Be,Zn)4Be12[(OH)3|(SiO4)3|(Si2O7)2]4Mon. 2/m : P21/b
9.BF.15DavreuxiteMnAl6Si4O17(OH)2Mon.
9.BF.20QueititePb4Zn2(SO4)(SiO4)(Si2O7)Mon. 2 : P21

Related Minerals - Dana Grouping (8th Ed.)Hide

57.1.1.1AminoffiteCa2(Be,Al)(Si2O7)(H2O,OH)Tet.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.3.1PhenakiteBe2SiO4Trig. 3 : R3
14.3.2BertranditeBe4(Si2O7)(OH)2Orth. mm2 : Cmc21
14.3.3BerylliteBe3(SiO4)(OH)2 · H2OOrth.
14.3.4LiberiteLi2BeSiO4Mon. m : Pm
14.3.5ChkaloviteNa2BeSi2O6Orth. mm2 : Fdd2
14.3.6EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
14.3.7EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
14.3.8GugiaiteCa2Be(Si2O7)Tet.
14.3.9Jeffreyite(Ca,Na)2(Be,Al)(Si2O7,HSi2O7)Orth.
14.3.10Semenovite-(Ce)Na8Ca2FeBe6Ce2Si14O40(OH)4F4Orth. mmm (2/m 2/m 2/m)
14.3.11BaryliteBe2Ba(Si2O7)Orth.
14.3.12Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.13Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
14.3.14Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.15Minasgeraisite-(Y)BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4Tric. 1 : P1
14.3.16SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
14.3.17TrimeriteCaMn2+2Be3(SiO4)3Mon. 2/m : P21/m
14.3.18ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
14.3.19Tvedalite(Ca,Mn)4Be3Si6O17(OH)4 · 3H2OOrth.
14.3.21SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
14.3.22Joesmithite{Pb}{Ca2}{Mg3Fe3+2}(Be2Si6O22)(OH)2Mon.
14.3.23Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
14.3.24Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
14.3.25Calciogadolinite-(Y)(YCa)2Fe3+Be2[SiO4]2O2

Other InformationHide

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

References for HarstigiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Flink, G. (1886) Mineralogiska notiser 1. Harstigit från Pajsberg. Bihang till Kongl. Vetenskaps-Akademiens Förhandlingar: 12(II): 59-63.
Flink, G. (1917) Bidrag till Sveriges mineralogi, 105. Harstigit från Hartsigsgrufvan. Arkiv för Kemi, mineralogi och Geologi: 6: 49-51.
Moore, P.B. (1968) Relations of the manganese-calcium silicates, gageite and harstigite. American Mineralogist: 53: 309-315.
Moore, P.B. (1968) Relation of the manganese-calcium silicates, gageite and harstigite: a correction. American Mineralogist: 53: 1418-1420.
Welin, E. (1968) Notes on the mineralogy of Sweden 6. X-ray powder data for minerals from Långban and the related mineral deposits of Central Sweden. Arkiv för Mineralogi och Geologi: 4: 499-541.
Hesse, K.F., Stümpel, G. (1986) Crystal structure of harstigite, MnCa6Be4[SiO4]2[Si2O7]2(OH)2. Zeitschrift für Kristallographie: 177: 143-148.

Internet Links for HarstigiteHide

Localities for HarstigiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy
 
  • Campania
    • Phlegrean Volcanic Complex
      • Salerno Province
        • Nocera Inferiore
Carati, M. (1988): I minerali degli inclusi metamorfosati nel Tufo Grigio Campano. Notiziario del Gruppo Mineralogico Geologico Napoletano, 18, 5-12; Balassone, G., Franco, E., Mattia, C.A. (1995): Chondrodite from metamorphic carbonatic ejecta of Campanian Ignimbrite. Plinius, 14, 44-45; Balassone, G., Franco, E., Mattia, C.A., Petti, C., Puliti, R. (2002): Re-examination of fluosiderite, an unknown mineral from southern Italy: equal to fluorine-rich chondrodite. European Journal of Mineralogy, 14, 151-155.
Sweden (TL)
 
  • Värmland
    • Filipstad
      • Persberg district
        • Pajsberg
Flink, G. (1886): Mineralogiska notiser 1. Harstigit från Pajsberg. Bihang till Kongl. Vetenskaps-Akademiens Förhandlingar 12 (II): 59-63; Flink, G. (1917): Bidrag till Sveriges Mineralogi. Arkiv för Kemi, mineralogi och Geologi. Vol 6. no. 21, p. 49-52; Hesse K F, Stümpel G (1986) Crystal structure of harstigite, MnCa6Be4[SiO4]2[Si2O7]2(OH)2. Zeitschrift für Kristallographie 177, 143-148
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 19, 2018 05:47:40 Page generated: September 26, 2018 16:09:44
Go to top of page