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Geology of Morocco. The geology of Morocco formed beginning up to two billion years ago, in the Paleoproterozoic and potentially even earlier. It was affected by the Pan-African orogeny, although the later Hercynian orogeny produced fewer changes and left the Maseta Domain, a large area of remnant Paleozoic massifs. During the Paleozoic ...
Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO 3.In its pure form (rare), it is typically a rose-red colour, [5] but it can also be shades of pink to pale brown.
Cedrus atlantica foliage and mature female cone Male cones beginning to shed pollen. Fully grown, Atlas cedar is a large coniferous evergreen tree, 30 to 35 m (98 to 115 ft) (rarely 40 m) tall, with a trunk diameter of 1.5 to 2 m (4.9 to 6.6 ft).
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Unusual specimen of goethite replacing a gypsum stalactite; the center is hollow.From Santa Eulalia, Chihuahua, Mexico.. Goethite (/ ˈ ɡ ɜːr t aɪ t /, [6] [7] US also / ˈ ɡ oʊ θ aɪ t / [8] [9]) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph.
It is commonly found as radiating clusters of acicular needle-like crystals in cavities in sulfide rich limestone and dolomite or in geodes. It is also found in nickel-iron meteorites, such as CK carbonaceous chondrites. [8] Millerite was discovered by Wilhelm Haidinger in 1845 in the coal mines of Wales.
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