Leave a message
Mon
9
May

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 Cancrisilite is indicated by the formula Na7Al5Si7O24(C03)•3(H2O). This mineral Cancrisilite is usually found forming in ultra-agpaitic pegmatites in a differentiated alkalic massif. Cancrisilite is usually from its type of locality at the Lovozero massif, Kola Peninsula, Russia. This mineral was named for the relatively high ration of silicon to aluminum, and its relation to “cancrinite.” Cancrisilite is known to crystallize in the hexagonal system of crystal formation. In optical mineralogy, the hexagonal system of crystallization comprises crystals having four axes. Three of which are positioned in a single plane with equal length and are symmetrically spaced. The fourth axis is found to be perpendicular to the other three axes. Cancrisilite has no cleavage displa even if evaluated closely under polarizing microscopes. Mineral Cancrisilite is found colorless, gray, lilac, light violet or pink in hand sample. The density measure of mineral Cancrisilite is usually found 2.4 grams per cubic centimeters. Most crystals of mineral Cancrisilite are found transparent to translucent in appearance. The hardness measure of mineral Cancrisilite is usually found 5 when evaluated using the Mohs scale method. Mineral Cancrisilite is usually found showing vitreous or glassy luster in reflected light of polarizing microscopes. Mineral Cancrisilite is also commonly found leaving a white streak when rubbed on white porcelain streak plate. Mineral Cancrisilite is also commonly found showing uniaxial negative figure when evaluated between crossed nicols of polarizing microscopes. Mineral Cancrisilite is also usually found with 0.0190 birefringence. Cancrisilite is found to be not radioactive.



Author:
Time:
Monday, May 9th, 2011 at 6:35 am
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