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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 the mineral Fiedlerite is indicated by Pb3Cl4F(OH)2 or Lead Chloride Fluoride Hydroxide. Fiedlerite is actually a Halide mineral. Fiedlerite mineral was first discovered at the Lavrion District slug localities in Greece in the year 1887. The mineral species Fiedlerite was named after Carl G. Fiedler, the nineteenth century director of the mines in Lavrio, Greece. There are easily over three hundred and seventy minerals are known from this locality. This locality has been mined for centuries starting with the Greeks and then the Romans for the lead content of its ore minerals. Some left over rocks were dumped into the sea because they are considered too poor in metals to be processed by ancient miners. These mining dumps are actually called slag dumps. At present, these slug dumps are being reprocessed through modern ore processing technology for the extraction of valuable metals. And some amazing new mineral species were found along with these dumps and they are not really there when the rocks were first mined centuries before. Analysis yielded that the seawater altered the low-grade ores and produce a most valuable and unusual assortment of the rare minerals. And among these assortments, Fiedlerite mineral is one of them. Some people do not consider these minerals to be true minerals because of their origin and formation. As a rule, minerals must have a natural origin in order to be considered as minerals. But these altered minerals are just created indirectly aided by human actions and they are also indirectly affected. The study of their origins is best left to mineralogists to think about.


Fiedlerite is known to crystallize in the monoclinic system of crystal formation. In the field of 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. Fiedlerite is only used as a mineral specimen and it is commonly found exhibiting interesting microscope appearance when viewed under geological polarizing light microscopes. Fiedlerite is commonly considered as an extremely rare mineral. It is most commonly found forming as tiny and platy crystals that are colorless in appearance.


            Mineral Fiedlerite is commonly found colorless and white appearance when viewed in hand samples and usually colorless in thin section when viewed under petrographic polarizing microscopes used in optical mineralogy. Fiedlerite is most commonly found exhibiting vitreous luster when mineral is viewed in reflected light of the polarized light microscope for mineralogists. Fiedlerite is most commonly found exhibiting good but not discernible cleavage when it is evaluated under polarized microscope used in the field of optical mineralogy. Fiedlerite is also most commonly found exhibiting conchoidal fracture when mineral is evaluated under some minor adjustments on the aperture diaphragm of polarizing light microscope. The specific gravity measure of the mineral is commonly found as 5.88 grams per cubic centimeters, which is commonly considered very heavy for translucent minerals. The hardness measure of the mineral Fiedlerite when it is evaluated using the Mohs scale method is usually 3.5. Fiedlerite is commonly found leaving a white streak when the mineral section is rubbed on a white porcelain streak plate.


            Most Fiedlerite mineral crystals are found transparent to translucent in appearance. The crystal habit of the mineral as described in the field of optical mineralogy commonly includes tiny tabular to platy crystals, which can be interesting when evaluated with the aid of polarizing microscope. The mineral section also shows very high surface relief when it is evaluated under some minor adjustments on the aperture diaphragm of the petrographic polarizing microscopes. Fiedlerite is commonly found showing biaxial negative figure when it is evaluated between crossed nicols of petrographic polarizing light microscopes used in optical mineralogy. The refractive index of the mineral Fiedlerite is commonly found ranging from 1.980 to 2.100 when the mineral section is evaluated in plane-polarized light of polarizing microscope for mineralogists. The maximum birefringence display of the mineral Fiedlerite in plane light of polarized microscope is usually 0.120. The mineral section also exhibits a strong dispersion when it is viewed in plane light of geological polarizing microscopes. There is no specific data found on the toxicity and health dangers for mineral Fiedlerite. However, the specimens of this mineral should be treated with great care and use of sensible precaution is advised upon handling them. Fiedlerite is a non-radioactive mineral.


            Mineral Fiedlerite is most commonly found associated with other interesting minerals including laurionite, paralaurionite and phosgenite. The best field indicators of mineral Fiedlerite usually include locality, crystal habit and density. Fiedlerite mineral is a secondary mineral from smelting activities. Mineral Fiedlerite is only known from one type of locality at Lavrio, Greece. Lavrio is formerly Lavrion and Larium, the ancient lead mining area of Greece.

Monday, March 16th, 2009 at 1:57 am
The Halides Mineral Class
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Click Here For Best Selection Of High Quality Polarizing Microscope