zinc ore and limestone on white background.

and argillaceous background black carbon caused clay close coal color composed contains debris diatomite diatoms environment environmental eruption explosive foliated fossil friable fuel gabbro gem gemmology gemology geological geology grain grains gray green igneous isolated lightcolored limestone macro mainly mineral minerals natural nature noise ore piece quartz raw remains rock rough science sedimentary shale shooting siliceous single skeletal solid specimen spinach stone structure tectonics texture that there tuff volcanic volcano white zinc