ID 265013920 © Montreenanta | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
sample rhyolite silicic volcanic rock stone geologist39aph39s paving stones attach rail sleepers extrusive igneous high silica pink gray color grains small difficult observe used isolated mineral white coal geology black nature macro crystal carbon close-up fuel gold texture natural charcoal pyrite raw precious ore object shiny background hand lens stone