Azurite mineral sample
Brochantite and azurite crystals
Azurite
Azurite.
Azurite crystals
Azurite crystals, SEM
Azurite sample
Azurite in Limonite Groundmass
Spherical concretions of radiating azurite crystals
A specimen of the mineral azurite found in Eire
Azurite nodule
Chrysocolla with azurite
Malachite crystals, SEM
Malachite and Azurite
Mineral deposition
Azurite, New Mexico, USA
Gibbsite
Azurite, an ore of Copper
Malachite
Botryoidal malachite
Polished slab of Malachite
Fibrous malachite
Azurite copper ore stone
Azurite in host rock
Azurite and malachite deposits
Azurite and malachite
Forms of copper ore
Azurite on Chrysocolla substrate
Stilbite crystal group
Biosphere 2, Arizona, USA
Prehnite and okenite
Zinnwaldite mineral group
Nephrite crystals
Petrified Wood, New Mexico
Hyalite Opal
Manganite
Hemimorphite
Crocoite
Brochantite
Rutilated quartz
Actinolite crystals
Actinolite crystals with talc
Titanite crystals in actinolite
Jade sword handle
Brazilianite crystals
Crystal Healing Stone Azurite
Malachite & Azurite I
Malachite & Azurite II
Asbestos sample
Goethite
Wad manganese mineral
Quartz and pyrite
Lazulite in groundmass of quartz
Chrysocolla mineral
Fluorite mineral
Agate
Chalcedony
Pseudomorphic crystal growth
Apophyllite on calcite
Quartz encrusted calcite crystals
Septarian nodule
Calcite crystals
Aragonite crystals
Lithographic limestone
Grey limestone and iron oxide
Limestone
Yellow limestone
Beryl crystals
Pink beryl crystal, SEM
calcite veining in limestone
Tourmaline on quartz
Sample of chalk
Quartz crystals, SEM
Jadeite carved dish from China
Nephrite jade specimen
Arsenopyrite
Realgar with grey quartz
Copper sulphate crystal
Kyanite mineral
Scolecite
Mineral properties, 18th century
Selenite crystals
Fluorite and barite crystals
Turquoise mineral
Blue topaz in pegmatite groundmass
Olivine-rich lava
Pectolite
Rough topaz
Dendritic pyrolusite
Diaspore
Pyrolusite
Diaspore crystals in emery groundmass
Crystalline brucite in groundmass
Bauxite, close-up
Limonite, close-up
Manganite crystals, close-up
Stibiconite
藍銅鉱
Ilmenite crystal with actinolite and quartz
Bauxite, aluminium ore
Fluorite crystals
Rutile crystals
Barite crystals
Barite and chalcopyrite crystals
Sample of limestone
Lapis lazuli, SEM
Moss agate
Concentric banding in agate
Tourmaline unworked stones
Fluorite
Sample of muscovite
Sample of calcite
Emerald
Coral calcite crystals
Silver crystals in calcite
Brazilianite crystals in calcite
Magnetite and calcite
Aragonite crystals with sulphur
Flos-ferri aragonite
Calcite crystal
Calcite
Gypsum stone
Aragonite-covered crayfish
Graphite on calcite crystals
Cut and polished septarian nodule
Pink calcite crystals
Zinc ore under ultraviolet light
Zinc ore
Calcite in mudstone
Zincite in fraklinite
Tetrahedrite
Calcium carbonate precipitation
Aragonite
Scalenohedral calcite crystals
Almandine
Calcite crystal rosettes
Cut pink topaz gemstone
Cerussite