https://garysgemgarden.com/product/mcguinnessite-on-serpentine-maryland/
McGuinnessite on Serpentine — Maryland - Gary's Gem Garden
Jul 31, 2025 - A box of genuine, natural McGuinnessite on Serpentine from Maryland, USA. A truly great deal for collectors and dealers alike!
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https://www.webmineral.com/specimens/picshow.php?id=2527&target=Mcguinnessite
Vuagnatite Mcguinnessite Image
Translucent colorless vuagnatite microcrystals with mcguinnessite. Near Red Mountain, Mendocino County, California, USA.
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