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 ed.:

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

Physical Properties of HarstigiteHide

Lustre:

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:

n_α = 1.678 n_β = 1.680 n_γ = 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

Elements listed:

Be, Ca, H, Mg, Mn, O, Si - search for minerals with similar chemistry

Common Impurities:

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 Å³ (Calculated from Unit Cell)

Twinning:

Cruciform twin, composed of two orthorhombic individuals twinned on (110).

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
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

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

Geological Setting of Type Material:

Open vein in hausmannite and dolomite.

Associated Minerals at Type Locality:

Rhodonite

Garnet Group

Calcite

Other Language Names for HarstigiteHide

German:Harstigit

Russian:Гарстигит

Simplified Chinese:镁柱石

Spanish:Harstigita

Common AssociatesHide

Associated Minerals Based on Photo Data:

Pennine	1 photo of Harstigite associated with Pennine on mindat.org.
Spessartine	1 photo of Harstigite associated with Spessartine on mindat.org.
Hematite	1 photo of Harstigite associated with Hematite on mindat.org.

Related Minerals - Nickel-Strunz Grouping Hide

9.BF.10	Samfowlerite	Ca₂₈Mn₆Zn₄(Be,Zn)₄Be₁₂[(OH)₃\|(SiO₄)₃\|(Si₂O₇)₂]₄	Mon. 2/m : P2₁/b
9.BF.15	Davreuxite	MnAl₆Si₄O₁₇(OH)₂	Mon.
9.BF.20	Queitite	Pb₄Zn₂(SO₄)(SiO₄)(Si₂O₇)	Mon. 2 : P2₁

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

57.1.1.1

Aminoffite

Ca₂(Be,Al)(Si₂O₇)(H₂O,OH)

Tet.

Related Minerals - Hey's Chemical Index of Minerals Grouping Hide

14.3.1	Phenakite	Be₂SiO₄	Trig. 3 : R3
14.3.2	Bertrandite	Be₄(Si₂O₇)(OH)₂	Orth. mm2 : Cmc2₁
14.3.3	Beryllite	Be₃(SiO₄)(OH)₂ · H₂O	Orth.
14.3.4	Liberite	Li₂BeSiO₄	Mon. m : Pm
14.3.5	Chkalovite	Na₂BeSi₂O₆	Orth. mm2 : Fdd2
14.3.6	Eudidymite	Na₂Be₂Si₆O₁₅ · H₂O	Mon. 2/m : B2/b
14.3.7	Epididymite	Na₂Be₂Si₆O₁₅ · H₂O	Orth. mmm (2/m 2/m 2/m) : Pnma
14.3.8	Gugiaite	Ca₂Be(Si₂O₇)	Tet.
14.3.9	Jeffreyite	(Ca,Na)₂(Be,Al)(Si₂O₇,HSi₂O₇)	Orth.
14.3.10	Semenovite-(Ce)	Na₈Ca₂FeBe₆Ce₂Si₁₄O₄₀(OH)₄F₄	Orth. mmm (2/m 2/m 2/m)
14.3.11	Barylite	Be₂Ba(Si₂O₇)	Orth.
14.3.12	Hingganite-(Ce)	(Ce,REE)₂(□,Fe²⁺)Be₂[SiO₄]₂(OH)₂	Mon. 2/m : P2₁/b
14.3.13	Hingganite-(Yb)	(Yb,Y,REE)₂□Be₂[SiO₄]₂(OH)₂
14.3.14	Hingganite-(Y)	(Y,REE,Ca)₂(□,Fe²⁺)Be₂[SiO₄]₂(OH)₂	Mon. 2/m : P2₁/b
14.3.15	Minasgeraisite-(Y)	BiCa(Y,Ln)₂(□,Mn)₂(Be,B,Si)₄Si₄O₁₆ [(OH),O]₄	Tric. 1 : P1
14.3.16	Sørensenite	Na₄SnBe₂Si₆O₁₆(OH)₄	Mon. 2/m : B2/b
14.3.17	Trimerite	CaMn²⁺₂Be₃(SiO₄)₃	Mon. 2/m : P2₁/m
14.3.18	Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O	Mon. 2/m : P2₁/b
14.3.19	Tvedalite	(Ca,Mn)₄Be₃Si₆O₁₇(OH)₄ · 3H₂O	Orth.
14.3.21	Sverigeite	NaMnMgSnBe₂(SiO₄)₃(OH)	Orth. mmm (2/m 2/m 2/m) : Imma
14.3.22	Joesmithite	{Pb}{Ca₂}{Mg₃Fe³⁺₂}(Be₂Si₆O₂₂)(OH)₂	Mon.
14.3.23	Gadolinite-(Y)	Y₂Fe²⁺Be₂Si₂O₁₀	Mon. 2/m : P2₁/b
14.3.24	Gadolinite-(Ce)	(Ce,La,Nd,Y)₂Fe²⁺Be₂Si₂O₁₀	Mon. 2/m
14.3.25	Calciogadolinite-(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

mindat.org URL:

https://www.mindat.org/min-1822.html
Please feel free to link to this page.

Search Engines:

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External Links:

Look for Harstigite on Webmineral

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

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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 Salerno Nocera Inferiore ⓘ ~~Fiano tuff quarries~~	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 ⓘ Harstigen Mine (TL)	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

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Harstigite

About HarstigiteHide

Classification of HarstigiteHide