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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
Habit: 4 mm rhombs single or stacked to cm in size
Colour: white to beige
Description: Manganese predominates over magnesium
Reference: 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.
Baryte
Habit: Tabular prisms
Colour: white, sometimes reddish from miargyrite inclusions
Description: Gangue mineral with carbonates
Reference: 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.
Boulangerite
Habit: Rings stacked in Tubes!!! more usually cm sized patches of wispey hairs, sometimes overgrown with freieslebenite.
Colour: Steel grey. Half micron thick walls on tubes transmit red light just like tubulite.
Description: Tubes of Boulangerite to near mm in length. One of these tubes was probed by Moelo who found 'Owyheeite' which was what they were calling tubulite at the time
Reference: 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.
Photo: © Robert O. Meyer. Boulangerite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Bournonite
Habit: Tabular prisms and cogwheel twins to 3 mm
Colour: dull to lustrous steel grey
Description: Typical bournonite
Reference: 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.
Photo: © TB. Bournonite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Calcite
Habit: Flattened rhombs to 3 mm
Colour: white to yellowish
Description: Contains substantial Iron and Manganese
Reference: 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.
Photo: © Robert O Meyer. Calcite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Celestine
Description: Known as single specimen only. Pinkish cleavages tending to yellowish flattened rhombs, closely resembling calcite
Reference: 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.
Cerussite
Habit: acicular sub millimeter xls
Colour: white
Description: Weathering product on galena and bournonite
Reference: 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.
Diaphorite
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. Close to Brogniardite.
Reference: 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.
Photo: © TB. Diaphorite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Fizélyite
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: - 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
Photo: © Stephan Wolfsried. Fizélyite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Freibergite
Habit: Sharp modified tetrahedra
Colour: Black with internal red lights
Description: This "freibergite" has only 20% Ag by wt and is argentian tetrahedrite.
Reference: 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.
Freieslebenite
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: 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.
Photo: © TB. Freieslebenite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Galena
Habit: tiny octos, massive
Colour: grey
Reference: 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.
Geocronite
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: 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.
Photo: © Stephan Wolfsried. Geocronite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Gold
Reference: 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.
Gold var: Electrum
Habit: yellowish wires, un affected by nitric acid
Description: very rare
Reference: 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.
Miargyrite
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: 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.
Photo: © DM. Miargyrite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Owyheeite ?
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 which was what tubulite was being called at the time.
Reference: Moello (Private Communication)
Pyrargyrite
Habit: Hexagonal prisms with trigonal terminations
Description: There are two generations of Pyrargyrite. The first was almost all remobilised and was near the last to deposit. See the paragenesis in 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.
Reference: 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.
Photo: © 2003 R.O. Meyer. Pyrargyrite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Pyrite
Habit: cubes and pyritohedra
Colour: yellow, some iridescent to limonitic
Description: gangue mineral
Reference: 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.
Pyrostilpnite
Habit: prismatic, twinning to form sheaves
Colour: orange
Description: small xls up to .6 mm. They were considered extremely rare until John Dagenais started looking for them at 75x!
Reference: 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.
Photo: © Robert O. Meyer. Pyrostilpnite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Quartz
Colour: clear, white
Description: gangue mineral
Reference: 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.
Rhodochrosite
Description: Known as single specimen. Pink cleavages tending to yellowish flattened rhombs, closely resembling calcite
Reference: 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.
Semseyite
Habit: Cockscomb sheaves that are characteristic
Colour: lead grey
Reference: 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.
Photo: © TB. Semseyite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Silver
Habit: wires rare
Description: probably post mining
Reference: 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.
Sphalerite
Habit: tetrahedra
Colour: yellow brown, some colorless with black rind
Description: gangue mineral
Reference: 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.
Sulphur
Description: very rare. post mining sub mm blebs which turn to red liquid on heating
Reference: 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.
Tetrahedrite
Habit: sharp tetrahedra, occasionally modified
Colour: black with internal red lights as to be expected with Zincian Tetrahedrite
Description: This tetrahedrite contains 20% Ag, 5% Zn,1% Fe, As<1% by wt.
Reference: 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.
Photo: © Robert O. Meyer. Tetrahedrite from Silver tunnel, Van Silver Property, Brandywine Creek, Vancouver Mining Division, British Columbia, Canada
Tetrahedrite var: Zincian Tetrahedrite
Description: See Terahedrite at Van Silver
Reference: 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.

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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