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Huronian

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Huronian [hyü′rō·nē·ən]
(geology)
The lower system of the restricted Proterozoic.


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Native silver and (to a lesser extent) native bismuth generally occur with cobalt-arsenides, sulfarsenides and sulfosalts in near-vertical carbonate ([+ or -] silicate) veins cutting Huronian sedimentary rocks of the Gowganda Formation, Archean greenstones, and the Paleoproterozoic Nipissing diabase (Fig.
Erratic high-grade results were reported from initial work, and later followed up by several other explorers (Vitro Minerals, Anglo Huronian, Rio Tinto, Lac Minerals, Tundra Gold Mines, Kalahari Resources).
1907, A lower Huronian ice age: American Journal of Science, v.
 
 
 
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