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Cave of Swords, Naica Mine, Mexico

Cave of Swords, Naica Mine, Mexico

Cave of Swords, Naica Mine, Mexico

Cave of Swords, Naica Mine, Mexico

Entrance to Naica Mine crystal caves

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Spanish geologist Juan Manuel Garcia-Ruiz

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Cave of Crystals, Naica Mine, Mexico

Selenite crystal from Cave of Crystals

Silver wire, mine specimen

Golden selenite

Golden selenite

Selenite mineral sample

Selenite swallow-tail crystals

Selenite swallow-tail crystals

Selenite crystals

Copper mine mill, Arizona, USA

Selenite crystals on a dried lake bed

Selenite crystals on a dried lake bed

Selenite crystal on a dried lake bed

Gypsum crystal group

Quartz crystal cluster

Copper mine, Arizona, USA

Copper mine, Arizona, USA

Selenite mineral, light micrograph

Selenite crystals, Winnipeg, Canada

Selenite crystals on a dried lake bed

Chemical crystals, polarised LM

Selenite crystals

Galena

Chrysocolla

Selenite, Mexico

Gypsum crystal variety

Gypsum variety Sand Selenite

Covelline

Rock Types

Selenite crystals

Open-cast copper mine, New Mexico, USA

Open-cast copper mine, New Mexico, USA

Manganosite

Gypsum, Variety Selenite, Utah

Rosette-shaped gypsum known as a desert rose

Acicular form of gypsum

Gypsum rock

Siderite and calcite

Banded iron formation

Diamond processing, Siberia, Russia

Banded iron formation

Galena

Selenite crystals

Selenite gypsum

Diamond mine slag heaps

White Sands National Monument, USA

Cave crystals

Taconite processing plant, USA

Taconite processing plant, USA

Fibrous antlerite

Microcrystalline antlerite

Zebraite

Borax

Pinto Valley Copper Mine, Arizona, USA, aerial photograph

Pinto Valley Copper Mine, Arizona, USA, aerial photograph

Pinto Valley Copper Mine, Arizona, USA, aerial photograph

Galenite cubes

Opencast coal mine

Diamond miners, South Africa

透石膏

透石膏

Diamond mine, Siberia, Russia

Venetia Diamond Mine, South Africa

Galena & sphalerite on quartz substrate

Galena & sphalerite on quartz substrate

Quartz with Galena & sphalerit

Bauxite

Bauxite

IRON ORE MINING

Chromite

Fluorspar crystals

Desert Rose (Selenite) Crystal Gemstone

Selenite crystals

Selenite

Gypsum crystals

Brochantite

Copper Ore

Siderite, and iron ore

Taconite processing plant, USA

Open-cast copper mine, New Mexico, USA

Germany, Lower Saxony, Salzgitter, iron ore mine, Salzgitter Kloeckner-Werke in the background

Diamond mine

Banded iron formation

Sand and gravel mine, aerial photograph

Sand and gravel mine, aerial photograph

Sand and gravel mine, aerial photograph

Mountain Pass rare earth mine

Outback quarry, Australia

View of a sample of selenite, a form of gypsum

OPEN-CUT IRON MINE

Malachite

Malachite, SEM

Volcanic crater lake with sulphur deposits

Men carrying mined sulphur from volcanic crater

Sapphire mining, Madagascar

Malachite in host rock

Azurite in host rock

Azurite

Malachite

Azurite and malachite

Malachite

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Diamond drill bit

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mineral exploration drilling, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core sample, Kenya

Mining core sample, Kenya

Mining core sample, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Mining core samples, Kenya

Sulphur rocks

Sulphur deposits, Mount Iwo, Japan

Sulphur deposits, Mount Iwo, Japan

Diamond mining, Angola

Mercury gold panning extraction, 1940

チュキカマタ銅山

Sodium chloride rock salt & pictogram

Sodium chloride rock salt on watch glass.

Rock concretions and minerals

Gypsum and sulphur crystals

Gypsum crystals

Opencast coal mine

Opencast coal mine

Opencast coal mine

Limestone mine, South Africa

Limestone mine, South Africa

Aragonite crystals

Sufco Coal Mine, Salina, Utah, USA

Sufco Coal Mine, Salina, Utah, USA

Lechuguilla Cave Crystals

Mountain Pass rare earth mine

Cobalt and copper mine, Democratic Republic of Congo

Orange crystal

Barite crystals, SEM

Vanadinite

Chalcosite

Magnetite and calcite

Magnetite in quartz

Cuprocassiterite in quartz mica schist

Tremolite crystals

Pseudomorphic crystal growth