Macro photograph of a sliced and polished piece of Rolling Hills dolomite; also known as Wave dolomite it is a sedimentary carbonate rock composed primarily of the mineral dolomite; mined in Mexico Image #3680 6144 X 4080 pixels
Macro photograph of the agate and quartz structural detail in a Baker Ranch thunderegg from New Mexico Image #4159 4800 X 3200 pixels (5.1 MB)
Macrophotograph of a cross-sectioned and polished malachite stalactite from the Democratic Republic of the Congo. Malachite is a copper based mineral. Image #4107 4912 X 5227 pixels
