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Click Here For Best Selection Of High Quality Polarizing Microscope

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The chemical formula of mineral Kidwellite is indicated by NaFe9(PO4)6(OH)10 – 5H2O or Hydrated Sodium Iron Phosphate Hydroxide. Kidwellite is actually a Phosphate mineral. Kidwellite was named after Albert Lewis Kidwell of Houston, Texas. The mineral was first discovered at Fodderstack Mountain, Arkansas, USA. Mineral Kidwellite is known to crystallize in the monoclinic system of crystal formation. In optical mineralogy, the monoclinic system of crystal formation comprises crystals having three axes of unequal lengths. Two of which are usually found in a position that is oblique or not perpendicular to one another. However, both of which are commonly found perpendicular to the third axis.

 

Mineral Kidwellite is most commonly used as mineral specimen and it is most often found exhibiting nice and wonderful appearance when viewed under polarized light microscopes used in optical mineralogy. Mineral Kidwellite is a rare phosphate mineral that is commonly found having typical yellow green color that is often splendidly exhibited under petrographic polarizing light microscope. This typical yellow green color of mineral Kidwellite is very distinctive as well as its compact encrusting crystal habit that is often found majestically exhibited under polarizing light microscope for mineralogists. Most crystals of mineral Kidwellite are found translucent to transparent in appearance. The crystal habit of mineral Kidwellite as described in optical mineralogy usually includes compact encrusting aggregates, also massive and fibrous that are usually found fascinatingly exhibited under petrographic polarizing light microscopes.

 

            Mineral Kidwellite is most commonly found exhibiting yellow green, pale green or yellow color that could appear more splendidly exhibited when viewed with the aid of polarizing microscopes for mineralogists. Kidwellite is also most commonly found exhibiting vitreous luster when mineral specimen is viewed in reflected light of petrographic polarizing microscope used in optical mineralogy. Mineral Kidwellite is often found showing poor cleavage that can be found more clearly visible when specimen is viewed with the aid of polarizing microscopes for mineralogists. Kidwellite is often exhibiting fibrous fracture under polarized microscopes used in optical mineralogy. The specific gravity measure of mineral Kidwellite usually gives an approximate value that is usually found ranging from 2.5 grams per cubic centimeters to 3.4 grams per cubic centimeters, which is considered average to slightly above average. The hardness measure of mineral Kidwellite when it is evaluated using the Mohs scale method is usually ranging from 3 to 4. Kidwellite is often found leaving a green streak when specimen is rubbed on a white porcelain streak plate.

 

            Kidwellite is most often found showing biaxial negative figure when mineral is evaluated under polarizing light microscopes used optical mineralogy. Kidwellite is also found exhibiting a very high surface relief when specimen is closely evaluated under several adjustments on the aperture diaphragm of the polarizing microscopes used in optical mineralogy. The refractive index of mineral Kidwellite is often found ranging from 1.787 to 1.805 when it is viewed with the aid of polarized light microscope for mineralogists. The maximum birefringence displayed by Kidwellite when it is viewed between crossed polars of petrographic polarizing microscope is usually 0.018. It also shows extreme dispersion when viewed with the aid of polarizing microscope. There is no specific data found on the toxicity and health dangers for mineral Kidwellite. However, the specimens of Kidwellite should be treated with great care and use of sensible precaution is advised upon handling them. Kidwellite is a non-radioactive mineral.

 

            Mineral Kidwellite is most commonly found associated with other interesting minerals such as limonite, strengite, dufrenite, rockbridgeite, and beraunite. The best field indicators of mineral Kidwellite usually include color, streak, crystal habit, and associations. Mineral Kidwellite most commonly occurs in phosphate deposits with other rare phosphates. It is usually found at the classic localities like Cornwall, England. Mineral Kidwellite notably occurs at Coon Creek Mine, Polk County, Arkansas, USA.



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Monday, February 16th, 2009 at 2:47 am
Category:
The Phosphates Mineral Class
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