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Silver tunnel, Van Silver Property (Van Silver Mine; Van Silver Claims), Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
This page kindly sponsored by Rob Woodside

 


Detailed Mineral List:
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Habit: 4 mm rhombs single or stacked to cm in size
Colour: white to beige
Description: Manganese predominates over magnesium
Reference: [
Baryte
Formula: BaSO4
Habit: Tabular prisms
Colour: white, sometimes reddish from miargyrite inclusions
Description: Gangue mineral with carbonates
Reference: [
Boulangerite
Formula: Pb5Sb4S11
Habit: Rings stacked in Tubes!!! more usually cm sized patches of wispey hairs, sometimes overgrown with freieslebenite.
Colour: Steel grey
Description: Tubes of Boulangerite to near mm in length
Reference: [
Photo: © Robert O. Meyer. Boulangerite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Bournonite
Formula: PbCuSbS3
Habit: Tabular prisms and cogwheel twins to 3 mm
Colour: dull to lustrous steel grey
Description: Typical bournonite
Reference: [
Photo: © TB. Bournonite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Calcite
Formula: CaCO3
Habit: Flattened rhombs to 3 mm
Colour: white to yellowish
Description: Contains substantial Iron and Manganese
Reference: [
Photo: © Robert O Meyer. Calcite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Celestine
Formula: SrSO4
Description: Known as single specimen only. Pinkish cleavages tending to yellowish flattened rhombs, closely resembling calcite
Reference: [
Cerussite
Formula: PbCO3
Habit: acicular sub millimeter xls
Colour: white
Description: Weathering product on galena and bournonite
Reference: [
Diaphorite
Formula: Ag3Pb2Sb3S8
Habit: Terminated prisms , ocassionally twinned to several mm
Colour: black, often with irridescent tarnish
Description: At least three terminal forms that distinguish it from freieslebenite
Reference: [
Photo: © TB. Diaphorite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Fizélyite
Formula: Ag5Pb14Sb21S48
Habit: Terminated prisms! lathe like ropey intergrowths often showing curvature.
Colour: Black
Description: Fizelyite xls are now in two phases, each of which is suitable for structure determination!
Reference: [
Photo: © Stephan Wolfsried. Fizélyite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Freibergite
Formula: Ag6[Cu4Fe2]Sb4S13-x
Habit: Sharp modified tetrahedra
Colour: Black with internal red lights
Description: This "freibergite" has only 20% Ag by wt and is argentian tetrahedrite.
Reference: No reference listed
Freieslebenite
Formula: AgPbSbS3
Habit: Flattened tabular wedges with only two terminal forms.
Colour: Black
Description: Generally smaller than diaphorite at Van Silver. Diaphorite has 3 or more terminal forms.
Reference: [
Photo: © TB. Freieslebenite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Galena
Formula: PbS
Habit: tiny octos, massive
Colour: grey
Reference: [
Geocronite
Formula: Pb14(Sb,As)6S23
Habit: Spikey, feathery 60 degree twins (pseudo hexagonal plates & spikes)
Colour: black
Description: First of the sulfosalts to precipitate, contains more As (3%by wt) than any other sulfosalt
Reference: [
Photo: © Stephan Wolfsried. Geocronite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Gold
Formula: Au
Gold var: Electrum
Formula: (Au, Ag)
Habit: yellowish wires, un affected by nitric acid
Description: very rare
Reference: [MinRec 31:223]
Miargyrite
Formula: AgSbS2
Habit: Blocky, complex and usually un orientable to 5 mm
Colour: Black with internal red lights
Description: like the rest, the best specimens found in galena veins
Reference: [
Photo: © DM. Miargyrite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Owyheeite
Formula: Ag3+xPb10-2xSb11+xS28, -0.13 < x > +0.20
Habit: Stacked rings that look like tubes
Colour: grayish black
Description: These tubes (stacked rings) are rare and one was analysed with SEM by Don Howard as Boulangerite and published in the Min Rec article. Another set of stacked rings that were associated with Fizelyite were analysed (probed) by Yves Moelo as Owyheeite
Reference: Probe by Yves Moelo
Pyrargyrite
Formula: Ag3SbS3
Habit: cubes, pyritohedra
Colour: yellow, tarnishing irridescent to limonitic.
Description: Gangue mineral
Reference: [
Photo: © 2003 R.O. Meyer. Pyrargyrite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Pyrite
Formula: FeS2
Reference: [
Pyrostilpnite
Formula: Ag3SbS3
Habit: prismatic, twinning to form sheaves
Colour: orange
Description: small xls up to .6 mm
Reference: [
Photo: © Robert O. Meyer. Pyrostilpnite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Quartz
Formula: SiO2
Habit: dauphine twins
Description: gangue mineral
Reference: [
Rhodochrosite
Formula: MnCO3
Description: Known as single specimen. Pink cleavages tending to yellowish flattened rhombs, closely resembling calcite
Reference: [
Semseyite
Formula: Pb9Sb8S21
Habit: Cockscomb sheaves that are characteristic
Colour: lead grey
Reference: [
Photo: © TB. Semseyite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Silver
Formula: Ag
Habit: wires rare
Description: probably post mining
Reference: [MinRec 31:223]
Sphalerite
Formula: ZnS
Habit: tetrahedra
Colour: yellow brown, some colorless with black rind
Description: gangue mineral
Reference: [
Sulphur
Formula: S8
Description: very rare. post mining sub mm blebs
Reference: [
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Habit: sharp tetrahedra, occasionally modified
Colour: black with internal red lights
Description: This tetrahedrite contains 20% Ag, 5% Zn,1% Fe, As<1% by wt.
Reference: [
Photo: © Robert O. Meyer. Tetrahedrite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Tetrahedrite var: Zincian Tetrahedrite
Formula: Cu10Zn2Sb4S13
Reference: No reference listed


28 entries listed. 26 valid minerals.

References

- Woodside, R.W.M., Soregaroli, A.E., Ansell, H.G., Twaites, B.L., Balacko T.W. (2000): Rare sulfosalts from the Van Silver Mine, British Columbia. Mineralogical Record, 31(3), 219-229.

-Yang H, Downs R T, Burt J B, Costin G (2009) Structure refinement of an untwinned single crystal of Ag-excess fizélyite, Ag5.94Pb13.74Sb20.84S48, The Canadian Mineralogist, 47, 1257-1264

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