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It is widely used as a camouflage color for uniforms and equipment in the armed forces. The first recorded use of olive drab as a color name in English was in 1892. [8] Drab is an older color name, from the middle of the 16th century. It refers to a dull light brown color, the color of cloth made from undyed homespun wool.
Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...
The mineral olivine (/ ˈ ɒ l. ɪ ˌ v iː n /) is a magnesium iron silicate with the chemical formula (Mg,Fe) 2 Si O 4.It is a type of nesosilicate or orthosilicate.The primary component of the Earth's upper mantle, [9] it is a common mineral in Earth's subsurface, but weathers quickly on the surface.
Olivine is the essential mineral found in all peridotites. It is an iron-magnesium orthosilicate with the variable formula (Mg,Fe) 2 SiO 4 . The magnesium-rich olivine of peridotites is typically olive-green in color.
The Urdu Wikipedia (Urdu: اردو ویکیپیڈیا), started in January 2004, is the Standard Urdu-language edition of Wikipedia, a free, open-content encyclopedia. [1] [2] As of 1 March 2025, it has 218,309 articles, 191,144 registered users and 7,561 files, and it is the 54th largest edition of Wikipedia by article count, and ranks 20th in terms of depth among Wikipedias with over 150,000 ...
Dunite may also form by the accumulation of olivine crystals on the floor of large basaltic or picritic magma chambers. These " cumulate " dunites typically occur in thick layers in layered intrusions , associated with cumulate layers of wehrlite , olivine pyroxenite , harzburgite , and even chromitite (a cumulate rock consisting largely of ...
Monticellite and kirschsteinite (commonly also spelled kirschteinite [3]) are gray silicate minerals of the olivine group with compositions Ca Mg Si O 4 and CaFeSiO 4, respectively.. Most monticellites have the pure magnesium end-member composition but rare ferroan monticellites and magnesio-kirschsteinite are found with between 30 and 75 mol.% of the iron end memb
The color of iddingsite varies from red-brown to orange-brown to deep ruby red to orange-red. The color of iddingsite in plane polarized light is the same until the later alteration stages when it turns into a darker color due to the strengthening effect of pleochroism. An increase in beta refractive index, which typically is 1.9 can be seen in ...