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Ancient old petrified wood, excavation, minerals, on grey background close up front view
Processing area of a limestone mining operation.
Mountains, Blue Water, Wanaka Tree
Travertine terraces made from the hot springs at Pamukkale National Park, leaving deposits of calcium. Pamukkale means cotton castle in Turkish and is in the province of Denizli in southwestern Turkey.
Ancient Chinese plant fossils are in an exhibition hall
Devonian fossils in limestone matrix include bryozoa, crinoid, and brachiopod fossils. Largest pieces are about 1/2 inch (10 mm). Fossil and Prairie Park Preserve, Silos and Smokestacks National Heritage Area, Rockford, Iowa, USA.
Silica quarry at sunrise in Ottawa, Illinois, USA.
view into a limestone quarry mine.
A close up on an old and abandoned chalk or salt mine seen from the top of a tall hill or mountain showing all the places of excavations surrounded with forests and moors seen in summer
Gravel in old surface stone quarry
Old phosphogypsum waste storage, the problem of environmental pollution by waste of old chemical plants.
Marble quarry distribution factory in rural areas
Industrial sand quarry. Sand pit. Sand special for construction. Construction industry.
dry and arid soil
Aerial sunny view of phosphogypsum mountains in Kedainiai city, industrial area, Lithuania
Rocks on a steep path in the area of the Vachkazets mountain range
Lanark County, Canada - September 2, 2012: A pickup truck drives through Tatlock Quarry in Lanark County, Ontario. This open pit mine is the largest calcium-carbonate quarry in Canada.
Volcanic geothermal landscape which consists of chalk, sulfur and algae at thermal springs in volcanic surroundings. The picture is taken at the Sipoholon hot springs in the northern part of Sumatra
An agate stone sample on a white background. Isolated druse of the mineral. Onyx.
Kaolin, mining, mining, transportation, white China clay, minerals, mines, industry, open-pit, mining
Palaeocoma Escheri starfish fossil from Forcalquier, France
The Faxe Limestone Quarry lies east of the town of Faxe on Zealand, Denmark
Brush of small quartz crystals with aggregates of opaque calcite, colored yellow by iron oxides from Bor Pit, Dalnegorsk, Russia. Collection mineral isolated on white background
Open-cast mine, open pit.
Chemical industry waste.
Pamukkale Traventine a cross section. Abstract.
Sea salt mound on sunny day
Paint Mines geological rock formations near in El Paso county, Calhan and Colorado Springs, Colorado, in western USA of North America. Named for the colorful clays that were collected by American Indians to make paint. Brightly colored bands, caused by oxidized iron compounds throughout the many different layers of clay.
Desert rose also known as gypsum flower. Cluster of sharp, bladed selenite crystals. Fluorescent mineral under UV light at private rock collection.
Fossilised Fish
Free Images: "bestof:Naturalis Biodiversity Center - Gypsum - mineral.jpg nl Wit gips mineraal en White gypsum mineral 2014-08-06 14 42 33 Institution Naturalis Naturalis"
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