Azurite nodule
Azurite
Azurite on Chrysocolla substrate
Azurite sample
Malachite & Azurite I
Malachite & Azurite II
Azurite crystals
Crystal Healing Stone Azurite
Azurite crystals, SEM
Azurite, an ore of Copper
Azurite in Limonite Groundmass
Azurite.
Septarian nodule surface
Open cast copper mining in Arizona
Azurite in host rock
Azurite and malachite
Brochantite
Manganite
Brochantite and azurite crystals
Raw turquoise
Malachite globular precipitate
Turquoise mineral
Calcium carbonate precipitation
Azurite mineral sample
Calcite crystal
Calcite
Quartz encrusted calcite crystals
Azurite copper ore stone
Magnetite and calcite
Forms of copper ore
Botryoidal malachite
Polished slab of Malachite
Malachite
Scolecite
Smithsonite
Septarian nodule
Chrysocolla mineral
Turquoise on native copper I
Turquoise on native copper II
Cut and polished septarian nodule
Cerrusite
Barite on Cerusite I
Barite on Cerusite II
Barite on Cerusite, close
Siderite and calcite
Vauquelinite
Sylvanite crystals
Chalcopyrite and quartz crystals
Cuprocassiterite in quartz mica schist
Concentric banding in agate
Stilbite crystal group
Malachite and Azurite
Almandine
Crocoite
Nephrite crystals
Titanite crystals in actinolite
Spherical concretions of radiating azurite crystals
Azurite, New Mexico, USA
Tetrahedrite
A specimen of the mineral azurite found in Eire
Aragonite
Iron oxide precipitation in agate
Cut and polished agate
Amethyst geode interior
Deformed quartz veins in slate
Staurolite, twinning cross
Chalcocite crystals
Copper sulphate with sodium carbonate
Botryoidal Malachite on chrysocolia
Stalactitic habit of malachite
Limescale deposit in copper piping
Chalcosite
Malachite mosaic
Synthetic abalone shell, SEM
Raw garnet crystal
Tourmaline crystal, thin section
Tourmaline
Rutile quartz
Tourmaline on quartz
Rough pinkish-red Rubellite
Rare bright green Uvarovite Garnet
Crenulation cleavage in calcite
Calcite globules
Galena
Calcite crystals
Coral calcite crystals
Silver crystals in calcite
Brazilianite crystals in calcite
Aragonite crystals
Aragonite crystals with sulphur
Flos-ferri aragonite
Pseudomorphic crystal growth
Graphite on calcite crystals
Apophyllite on calcite
Pink calcite crystals
Double refraction in a calcite crystal
Zincite in fraklinite
Macrophotograph of crystals of calcite
Calcite crystal group
Skalenoedric calcite crystals
Scalenohedral calcite crystals
Mollusc shell, SEM
Calcium carbonate crystals, SEM
Calcite crystal rosettes
Cerussite
Red calcite, Mexico
Nailhead calcite and galena
Magnesite crystals in groundmass
Scalenohedral calcite, close-up
Prehnite and okenite
Sphalerite & chalcopyrite
Rutilated quartz
Meyerhofferite
Bournonite on Gypsum Substrate I
Bournonite on Gypsum Substrate II
Azurite and malachite deposits
Chrysocolla with azurite
Ruby in zoisite
Almandine crystals
Blue smithsonite in groundmass
Magnetite octahedra
Magnetite octaheders
Magnetite in quartz
Tourmaline schorl specimen
Iridescent pyrite in a clay nodule
藍銅鉱
Hydrated copper sulphate crystals, SEM
Arsenopyrite
Oval cut red Rhodochrosite gemstone
Malachite mineral sample
Quartz filled geode
Mineral deposition
Rubies and sapphire
Dendritic mineral crystals
Tourmaline unworked stones
Tourmaline cross section
Flourite crystal, Kirlian photograph
Lapis lazuli crystals I
Lapis lazuli crystals II