dark volcanic rock formation |
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navigate by keyword : rock volcanic stone mineral geology texture surface dark gray black erosion weathering pyrite gold yellow fragment formation landscape natural earth material rough sharp layered irregular matrix deposits geological specimen sample science obsidian basalt pumice lava sediment conglomerate schist slate quartz feldspar amphibole pyroxene olivine calcium magnesium iron sulfur potassium |
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The image showcases a large, irregularly shaped rock composed of dark gray and black volcanic material. The rock exhibits a rough, fractured surface with sharp edges and a layered appearance, suggesting it's been weathered and eroded over time. Patches of yellow-gold coloration are visible within the darker matrix, possibly indicating the presence of minerals like pyrite. The rock's texture is |
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