Leave a message
Fri
26
Nov

Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

The chemical composition of mineral Betpakdalite is indicated by the formula MgCa2Mo8As2Fe3+3O36(OH)•23(H2O). Betpakdalite is usually found occuring at oxidized Mo-As-Fe ores. Betpakdalite is most commonly found at Bet-Pak-Dal desert, Kazakhstan. Betpakdalite was named for the locality. Mineral Betpakdalite 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 Betpakdalite is usually found showing perfect cleavage in the one directions which can be seen more clearly visible when viewed closely under polarized microscope used in the field of optical mineralogy. Most Betpakdalite crystals are found colored bright lemon yellow and greenish yellow. The specific gravity measure of mineral Betpakdalite is usually found ranging from 2.98 to 3.05 grams per cubic centimeters giving an average of 3.01 grams per cubic centimeters. The crystal habit of mineral Betpakdalite as described in the field of optical mineralogy is usually found agregates in form which is made of numerous individual crystals or clusters. It can be also found powdery in form showing a loose, poorly-coherent pulverent mass that can be found more clearly visible when evaluated using the polarzed microscope used in the field of optical mineralogy. The hardness measure of mineral Betpakdalite is usually found 3 when speciemen is evaluated using the Mohs scale method.  Betpakdalite is commonly found showing vitreous or waxy luster when viewed in reflected light of polarizing microscope. Mineral Betpakdalite is also commonly found showing biaxial positive figure when viewed closely between crossed nicols of polarizing microscope used in the field of optical mineralogy. It is also showing 0.0680 birefringence and extreme dispersion when viewed under polarized microscope for mineralogists. Mineral Betpakdalite is a pleochroic mineral commonly showing pale yellow, greenish yellow or green color. Mineral Betpakdalite is also found to be non-radioactive as evaluated.



Author:
Time:
Friday, November 26th, 2010 at 3:31 pm
Category:
Optical Mineralogy
RSS:
You can follow any responses to this entry through the RSS 2.0 feed.
Navigation:
Click Here For Best Selection Of High Quality Polarizing Microscope