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Posted (edited)

Hi! I found this basalt in the western Cascade Range, near an abandoned mine. There was a crumbly vein nearby, which I scratched with the pick. There was also a lot of gray andesite around.

My best guess is the white is plagiclase feldspar, but are those little shiny specs galena? The sample is too small to check for hardness. They do appear cubic, or at least do have flat sides, under a hand lens. Any help is appreciated! 

1A0E99CD-8782-4D83-A01B-9A14A6866CAA.jpeg

D36E686C-5FDB-4639-A1ED-74495E3BAA55.jpeg

6F870408-64EA-4ED8-9AB4-DF23B52AE315.jpeg

D3B64B40-C9A4-48B1-B1F0-1DA63851E2E3.jpeg

F2C6F39E-3D81-4DD8-B8FB-EC32FE46E86B.jpeg

A4CF3C4C-6144-48B0-8886-5F59A07DEB56.jpeg

Edited by Tomalahno
Added images and site description. Sp.

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Photos are blurry but looks like Pyrite to me. 

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13 hours ago, Tomalahno said:

Thanks! Would the visual distinction be color (brassy yellow = FeS, silver gray = PbS?). Apologies for the blurry pics. My poor camera suffers my small sample dimensions. 

 

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Posted (edited)

I found some  galena once, Arctic Dave should remember that dark vein up on top of the hill over towards Kirkland...hit it with a torch and plumbing flux an got shiny little molten beads.  The density can be a dead giveaway.  I had San Diego Dectector Xrf it but there was no Ag mixed in.waaaaaa. just lead

Edited by Stillweaver hillbelli
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