Lapidaryforum.net
Let's Rock => Identifications of Materials => Topic started by: R.U. Sirius on July 30, 2022, 06:20:15 PM
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This unlabelled slab I found in collection I bought recently. It's very translucent, and has mossy green inclusions running throughout, much like some green moss agates (though it feels a bit different in my hands). What throws me off are the pastel reddish/purple areas.
Do any of you recognize this material right off the bat?
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Not ignoring your post - just don't know. Wish I did.
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A lot of rough like that in Oregon. The green is an iron color as is the red just a slightly higher concentration.
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Good info as usual from Lithicbeads.
We have a piece here without moss, with red, white, and green all in the same piece. Changes in the percentage of the element giving it color is an interesting bit to consider.
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So many locations with green moss/red. Another from California is the old Horse Canyon beds. It's impossible to say it is or isn't but I'm going to lean from elsewhere. Wish I could give more info. The moss silhouette reminds me of India Moss Agate I have never gotten any of the Indian with Red though, anyone else know it the India Moss agate also goes to red?
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Worth noting is that red/purple colouring is diffuse, in patches, and the green mossy pattern appears to have some degree of schistosity to it.
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i would consider its green from nickel not iron and reddish from iron
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The colors are from iron just different concentrations and/or reduction states.
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Could this be hydrogrossular garnet ("transvaal jade")? Cannot show it in photos, but the material just doesn't feel like chalcedony. There's a more waxy feel to it. I'll check the density and come back here.