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Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

The chemical formula of mineral Parisite is indicated by Ca(Ce, La, Nd)2(CO3)3F2 or Calcium Cerium Lanthanum Neodymium Carbonate Fluoride. Parisite is actually a Carbonate mineral. It is considered as a minor ore of cerium and other rare earth metals. It is also most commonly used as mineral specimen and is often found exhibiting nice and splendid microscope images when viewed under polarizing microscope for mineralogists. Parisite was named after the owner of the mine J.J Paris at which the mineral was first discovered. Parisite is only found as small crystals and it is most commonly used for micromounts for polarizing microscopes. Some Parisite crystals are actually reported to have been cut for gemstone purposes, but normally the crystals of Parisite are too small and cloudy to make good gemstones.


            Parisite is most commonly found white, tan, yellow-brown, reddish-brown, brown, yellow and pale pink, all of which can be more splendidly exhibited when specimen is evaluated under polarizing microscopes used in optical mineralogy. Parisite is also most commonly found showing vitreous, resinous to dull luster when viewed in reflected light of petrographic polarizing microscope. Parisite crystals are usually found translucent to more rarely transparent in appearance. Parisite is known to crystallize in the trigonal system of crystal formation. The crystal habits of mineral Parisite usually include small acicular, platy or thin tabular crystals that form rosettes, which are more fascinatingly wonderful when viewed with the aid of polarized microscopes for mineralogists. Parisite is also known to form double hexagonal pyramids and rhombhohedrons. It is often intergrown in a lamellar fashion with synchysite, rontgenite and bastnasite.


            Mineral Prisite is most commonly found showing fair to good basal cleavage in one direction, which can be seen more clearly visible when specimen is evaluated with the aid of polarizing microscopes. It also shows subconchoidal to splintery fracture when evaluated under polarized microscopes for mineralogists. The hardness measure of mineral Parisite is typically around 4.5 but will vary from 4 to 5. Parisite is most commonly found leaving a white to yellowish white streak when specimen is rubbed on a white porcelain streak plate. The specific gravity measure of the mineral is approximately 4.2 grams per cubic centimeters to 4.3 grams per cubic centimeters, which are considered well above average. Parisite is only soluble in nitric acid. When viewed closely under petrographic polarizing microscope, a strong parting is also sometimes seen and crystals are typically striated parallel to the basal face. Parisite most commonly associated with other interesting minerals including bastnasite, synchysite, gold, fluorite, dolomite, allanite, barite, calcite and many others. The best field indicators of mineral Parisite usually include color, crystal habit, density, luster, cleavage, low solubility in nitric acid and locality. Parisite crystals are found in carbonatites, granite pegmatites and alkaline syenites and the hydrothermal deposits associated with them. Parisite is a significant ore at the bastnasite mines of Mountain Pass, California. It can be also found in some localities around China.

Monday, June 29th, 2009 at 2:07 pm
The Carbonates and Borates Mineral Class
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Click Here For Best Selection Of High Quality Polarizing Microscope