Stalactitic chalcedony geode "The Abalone" Rhyolite Approx weight: 435g

Approx weight: 435g

so it can be especially captivating in bright light or when lit from underneath

then this variety of chalcopyrite is fool's bornite: it borrows its trade name from the closely related mineral bornite

when you study the surface closely

Stalactitic chalcedony geode "The Abalone" Rhyolite Approx weight: 435gLocale: Atlas Mountains, Morocco Approx dimensions: 5 x 4 x 2" Approx weight: 393g These unusual geodes from Morocco are like small caves lined with stalactites, botryoidal forms, and swirling agate patterns. While commonly called red chalcedony, I find the color is more orange to red orangeor in the case of this specimen, more brick red orange. Hematite causes this coloration, but later phases of growth (second generation) dont contain hematite