Need help identifying a rock/minerals

[kyleoflyman]

Found this rock in Western Washington. It was below a rock outcropping that shows lots of signs of hydrothermal activity. Any ideas of what it is and what the colors in it are would be appreciated.

 

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[kyleoflyman]

Made it up to my spot a few days ago and was able to get a few more pieces of the "green quartz". Seems to be getting thin so I'm gonna dig down and follow the vein further. Ive attached a pic of the quartz crystals and also a pic of some of the pieces that I've got in the tumbling process.

 

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[Eu_citzen]

Nickel, yes? It looks like chalcedony - so the green could be classified as chrysoprase.

 

[kyleoflyman]

Thats what I'm hoping it is. I took it to a geologist last week and they identified the rocks as being in the Garnierite family, primarily Pimelite. The fans of metal/crystal are likely Millerite. With that being said, would the chrysoprase just be the green colored quartz inside the vein and/or Pimelite?

 

[Eu_citzen]

Chrysoprase is a green chalcedony coloured by Nickel. Chalcedony often has a waxy lustre.

 

[kyleoflyman]

There are some portions that are waxy but those tend to dry out when exposed to air and become brittle and resemble a green talc. The rest of the green quartz remains sharp and shiny. Is that just where its fractured from removing it from the hillside?

 

[BurntBear]

It does look like Chrysoprase to me.

Your towel is definitely made in China though.

 

[kyleoflyman]

Good ol' dollar store

 

[Eu_citzen]

If it dries out and becomes brittle its something else. Chrysoprase doesn't do that.

 

[kyleoflyman]

Its only on the thin edges where it becomes dry and brittle. Almost like the mineralized water was very thin there. Most of the crystal structure remains intact

 

[kyleoflyman]

I sent the specimen with the metallic spray to the chemistry department at the University of Washington and they confirmed it as Millerite

 

[BurntBear]

The light, porous material appears to be pumice.

 

[wilfndgold]

Yeah that blue lookin stuff I,ve been finding it out here in some big pegmatite. Hope you find out it,s valuable.