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Click Here For Best Selection Of High Quality Polarizing Microscope

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The chemical formula of mineral Pseudoboleite is indicated by Pb5Cu4Cl10(OH)8 – 2H2O or Hydrated Lead Copper Chloride Hydroxide. This Pseudoboleite is actually a Halide mineral. It is considered as a very minor ore of copper and lead. Pseudoboleite is also most commonly used as mineral specimen and it is most often found exhibiting nice and splendid microscope images when viewed under polarizing microscope used in optical mineralogy. Pseudoboleite is closely related to boleite. It is often intergrown with its false shape. Pseudoboleite gets its name by being a false boleite.

             Mineral Pseudoboleite is usually found forming tiny blocky crystals on top of the boleite crystals faces that are called epitaxial overgrowths. Pseudoboleite is often intergrown with boleite inside these crystals is an example of parallel growths. Mineral Pseudoboleite is most commonly found indigo blue in color, which can be seen more fascinating when specimen sample is evaluated with the aid of petrographic polarizing microscope. It is also most commonly found showing vitreous to pearly luster when viewed in reflected light of polarized microscopes used in optical mineralogy. Most crystals of mineral Pseudoboleite are usually translucent to transparent in appearance. Pseudoboleite is also known to crystallize in the tetragonal system of crystal formation. In optical mineralogy, this tetragonal system comprises crystals having three axes, which are all in a position perpendicular to one another. Two axes are usually found having the same or equal length. 

            The crystal habits of mineral Pseudoboleite as described in the field of optical mineralogy usually include tiny blocky crystals on top of the boleite crytal face. Pseudoboleite is also sometimes found forming a form of epitaxial overgrowth. It is also often found intergrown with boleite in parallel growth. Pseudoboleite crystals can be pseudocubic. Mineral Pseudoboleite is also most commonly found showing perfect cleavage when viewed with the aid of petrographic polarizing microscopes used in optical mineralogy. Mineral Pseudoboleite is also usually found showing uneven fracture when viewed under polarizing microscope fro mineralogists. The hardness measure of mineral Pseudoboleite when specimen sample is evaluated using the Mohs scale method is usually 2.5. The specific gravity measure of mineral Pseudoboleite is usually ranging 4.9 grams per cubic centimeters to 5.0 grams per cubic centimeters, which are rather heavy for translucent minerals. Pseudoboleite is usually found leaving a light green to blue streak when specimen sample is rubbed on a white porcelain streak plate. Pseudoboleite is most commonly found associated with other interesting minerals such as rare copper and lead chlorides. It can be also found with chrysocolla, cerussite, connelite, smithsonite, and many others. The best field indicators of mineral Pseudoboleite include locality, crystal habit, density, color and streak. Pseudoboleite notably occurs at several localities including Boleo, Santa Rosalia, Baja California, Mexico and Mommoth District, Arizona, USA and most places where boleite is found.



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Monday, June 29th, 2009 at 2:39 pm
Category:
The Halides Mineral Class
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