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Identity HelpSilver Coin Mine Mineral id query

19th Oct 2018 15:25 UTCTrevor Boyd

Hi all,

Going through some recently acquired Silver Coin material I came across these crystals. The FOV in the images is approx 6mm.

I'm guessing the crystals may be stolzite-wulfenite series, although not sure that the slightly curved crystal edges would fit with that assessment???

Any other suggestions greatly appreciated 8)

Thanks in advance,

Trevor

19th Oct 2018 18:07 UTCKevin Conroy Manager

I'm not familiar with this mine. There are a few listed on Mindat, which one are these from?

19th Oct 2018 18:30 UTCBrent Thorne Expert

Hi Trevor,

The crystals look somewhat like stolzite that I have collected from there. However, my stolzite are single, window pane shaped crystals, with no twinning or growth patterns. Your crystals are definately different.

Brent

19th Oct 2018 19:16 UTCPavel Kartashov Manager

Barite.

20th Oct 2018 12:33 UTCTrevor Boyd

Many thanks guys for your responses.

Kevin - sorry, should have been more specific, Silver Coin Mine, Valmy, Nevada 8)

Brent - yeah, I saw your picture, similar, but as you say, definitely not the same

Pavel - could be?? although the barite from there does seem to preferentially form blockier crystals?

For info the same matrix rock has also produced nice examples of chlorargyrite crystals

20th Oct 2018 13:23 UTCRolf Luetcke Expert

Trevor,

Here are some Silver Coin Baryte crystals I have, quite similar except color.

20th Oct 2018 18:58 UTCUwe Kolitsch Manager

Lustre is too greasy for baryte.

The slightly curved crystal edges would fit stolzite-wulfenite.

21st Oct 2018 21:11 UTCTrevor Boyd

Thanks Uwe - Rolf, maybe we both have stolzite-wulfenite then??

Cheers,

Trevor