Picasso Stone
Macro photograph of patterns in a Picasso stone slab; named 'Picasso' for the brush stroke-like lines; a type of marble from Utah Image # 3355 4682 X 5740 pixels
Whitcomb Creek Geode
Macro photograph of patterns in a Whitcomb Creek geode from Oregon; a geode is a stone nodule with an inner cavity filled with crystals or mineral matter Image #3290 3200 X 4678 pixles (3.74 MB)
Baker Ranch Thunderegg, close up
Macro photograph of the agate and quartz structural detail in a Baker Ranch thunderegg from New Mexico Image #4162 4080 X 6144 pixels (7.42 MB)
Malachite
Macrophotograph of a cross-sectioned and polished malachite stalactite from the Democratic Republic of the Congo. Malachite is a copper based mineral. Image #4106 6058 X 3686 pixels 6058 X 3686
Labradorite
Macro photograph of a piece of labradorite (a member of the feldspar group of minerals); from Maniry, Madagascar Image #2573 3200 X 4800 pixels
Amethyst Crystals
Extreme macro photograph of amethyst from the Purple Haze mine near Thunder Bay, Ontario, Canada. The red coloration is due to the presence of hematite inclusions. Image #3015 4699 X 3092 pixels
Macro photograph of the agate and quartz structural detail in a Baker Ranch thunderegg from New Mexico Image #4163 3969 X 6144 pixels (7.50 MB)
Rolling Hills Dolomite
Macro photograph of a sliced and polished piece of Rolling Hills dolomite; from Chihuahua, Mexico Image #3679 4080 X 6144 pixels
Amethyst
Macrophotograph of the mineral amethyst (Silicon dioxide); a form of quartz that came to be a symbol of celibacy in the Middle Ages; found in Uruguay. Image #2286
'Mexican Coconut' Geode
Mineral (agate and quartz) patterns in a cut and polished Mexican Coconut geode; Mexico Image #3832 3200 X 4800
Fluorite mineral, closeup
Macro photograph of a slab of fluorite (calcium fluoride) from the Jiangxi Province in China Image #2508 4800 X 3200 pixels
Fluorite Mineral
Macro photograph of a slab of fluorite (calcium fluoride) from the Jiangxi Province in China Image #2511 3200 X 4800 pixels
Birds Eye Rhyolite
Macro photograph of the detail in a piece of Birds Eye rhyolite; a rock of volcanic origin Image #2848 4734 X 3132 pixels
Pietersite Gemstone
Macrophotograph of the structural detail in a pietersite gemstone from Arizona. Also known as 'Arizona tiger eye' it is a variety of chalcedony that contains amphibole mineral fibers that result in a chatoyant (optical reflectance) effect. 4696 X 3200 pixels (4.96 MB)
Pink Opal
Macrophotograph of the colors and patterns in a cut and polished slab of brecciated pink opal. An opalised radiolarite from Western Australia. Radiolarite is a sedimentary rock composed primarily of the microscopic skeletal remains of radiolara protozoa. Image #3849 5803 X 2659 pixels
Chevron Amethyst Mineral
A combination of purple amethyst and white quartz; Africa Image #3830 3721 X 5979 pixels
Azurite
Velvety soft blue masses of azurite are formed from the weathering of copper minerals. Used as a pigment by Renaissance painters. Image #3352 4800 X 3200 pixels
Cactus Quartz/Amethyst
Macrophotograph of a small portion of a Cactus quartz (a.k.a. Spirit quartz) crystal cluster with purple amethyst. (Selective focus to place emphasis on the larger amethyst crystal.) The orange coloration is due to iron oxidation and small iron inclusions can be seen in the matrix of many of the crystals. From the Magaliesberg Mountains of South Africa. Image #4117 3200 X 4800
Wild Horse Magnesite
Macrophotograph of a slab of magnesite (white) and hematite (red) from the Globe Copper Mine in Arizona Image #3908 4800 X 3200 pixels
Rhodochrosite Mineral
Macro photograph of the patterns in a piece of rhodochrosite (Manganese carbonate) from Argentina Image #3486 3200 X 4746 pixels
Serpentinite
Metamorphic rock formed by the serpentine group of minerals; Washington State Image #2556 3200 X 4800 pixels
Rolling Hills Dolomite in Black and White
Macro photograph of the 'rolling hills' in a piece of dolomite from Mexico Image #3678BW 6144 X 4080 pixels
Macro photograph of the agate and quartz structural detail in a Baker Ranch thunderegg from New Mexico Image #4160 7360 X 4912 pixels (11.35 MB)
Rhodochrosite
Macrophotograph of a slice of rhodochrosite stalactite; from the Capillitas Mine, Catamarca Province; Argentina; rhodochrosite is a manganese carbonate mineral Image #4140 6144 X 4912 pixels
Pyrite
Macro photograph of a piece of Octahedral pyrite with strong sidelighting to emphasize its texture and angular structure; Quiruvilca Mine, Peru Image #2579 4385 X 2799 pixels
Onyx
A form of layered chalcedony characterized by parallel banding; chalcedony is a form of (cryptocrystalline) quartz Image #2665 4800 X 3200 pixels
Macro photograph of a slab of Rainbow fluorite (calcium fluoride) from China Image #2647 4775 X 3200 pixels
Dugway Geode
Abstract macro photograph of a Dugway geode; from the Dugway Geode beds of Utah Image #2384 4757 X 3141 pixels
Peridot on Basalt
Macrophotograph of a cluster of peridot crystals from Arizona. Most peridot is approx. 90% forsterite which is a form of olivine with a high magnesium content. Image #4112 6063 X 3930 pixels
Closeup photograph of a Dugway geode whose cavity is lined with quartz crystals; Dugway Geode Beds, Utah Image #4119 4080 X 5904 pixels
Macrophotograph of a small portion of a Cactus quartz (a.k.a. Spirit quartz) crystal cluster with purple amethyst. The orange coloration is due to iron oxidation and small iron inclusions can be seen in the matrix of many of the crystals. From the Magaliesberg Mountains of South Africa. Imge #4116 6144 X 4040 pixels
Macro photograph of a sliced and polished piece of Rolling Hills dolomite; Chihuahua, Mexico Image #3678 6144 X 4080 pixels
Dry Clay Patterns
Theodore Roosevelt National Park; North Dakota Image #3815 4080 X 6144 pixels
Wild Fire Opal
Closeup of a slab of Wild Fire Opal (with some agate) from Utah; Pleistocene in age (approx. 19,000 yrs old) Image #4073 6143 X 3378 pixels
Baryte Mineral
Macro photograph of a cut and polished piece of baryte and marcasite from Poland Image #3268 4723 X 3200 pixels
Macro photograph of patterns in a Picasso stone slab; named 'Picasso' for the brush stroke-like lines; a type of marble from Utah Image #3354 4738 X 3200 pixels
