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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 Niter is indicated by KNO3 or Potassium Nitrate. Niter is actually a Carbonate mineral. It is a known source of nitrate. Niter is actually one of the few nitrate minerals available on the mineral market. Nitrate is actually not commonly found because of its general ease to dissolve in water. A solid nitrate will in fact liquefy by removing water from moisture in the air, a process called deliquescence. Despite the fact that Niter is not deliquescent, it is still found very soluble in water. Nitrates are similar to Carbonates that is why they are classified under Carbonates Class of minerals. Niter is most similar to the orthorhombic carbonates or those carbonates that belong to the Aragonite Group. The structures of Niter and the members of the Aragonite Group are analogous and they therefore share many similar properties such as symmetry and crystal habit. Niter is also known as saltpeter, which is said to reduce the sexual desire in humans, especially males. It is a kind of a reverse aphrodisiac. Ironically, it is also used as a fertilizer.

             Niter is most commonly found white or gray, also tinted yellow or brown because of impurities found. Samples are more fascinating when viewed with the aid of petrographic polarizing light microscopes used in optical mineralogy. Niter is also most commonly found exhibiting vitreous luster when samples in thin section are closely evaluated with the aid of petrographic polarizing light microscope used in the field of optical mineralogy. Most crystals of mineral Niter are found translucent to transparent in appearance, only in individual crystals. Niter is also known to crystallize in the orthorhombic system of crystal formation. In optical mineralogy, this orthorhombic crystal system comprises crystals having three mutually perpendicular axes, of which all are of different lengths. The crystal habit of mineral Niter as described in the field of optical mineralogy includes crusts and acicular crystals formed as efflorescence on cave and mine walls. Niter is also found as a constituent in arid climate soils. Niter rarely forms crystals of any appreciable size. However, it is also sometimes found forming clusters of hexagonal shaped twinned crystals that can be seen more splendidly exhibited when viewed under polarized microscopes used in optical mineralogy. The exquisite beauty of these clusters of hexagonal twinned crystals of Niter can be more justified through the optical lenses of the petrographic polarizing microscopes for mineralogists who find peace of mind indulging themselves in optical mineralogy. 

            Niter can be also found showing good prismatic cleavage in two directions but thin section of this mineral sample can be best evaluated showing best results with the aid of polarizing microscope. Niter is also known to exhibit uneven fracture, but one can see the best image of the said feature when samples of Niter is closely viewed under polarized microscope used in the field of optical mineralogy. The hardness measure of Niter when it is evaluated using the Mohs scale method is usually found 2. The specific gravity measure of mineral Niter is approximately 2.1 grams per cubic centimeters, which is well below average. Niter is also most commonly found leaving a white streak when sample is rubbed on a white porcelain streak plate. Niter is easily soluble in water and it is also found showing a violet flame in a flame test due to its potassium content. A flame test is where a sample is burned in a flame and gives off a certain color. Niter is most commonly found associated with other interesting minerals including dolomite, calcite, and certain minerals in various arid region soils. Most nitrates can be found in arid, desert regions such as around the Persian Gulf or found as efflorescence on dry cave or mine walls. Niter notably occurs at several localities including the Persian Gulf states in India, some areas in USA including New Mexico, Kentucky, and Tennessee as well as countries such as Russia, northern Chile, Italy, Spain, Egypt and Bolivia.

 



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Monday, June 29th, 2009 at 1:55 pm
Category:
The Carbonates and Borates Mineral Class
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