Conoscopic Observation Flashcards
1
Q
the mineral is viewed simultaneously from different angles
A
conoscopic observation
2
Q
what are the requirements for conoscopic observation
A
centered stage, high magnification, XPL, Amici-Bertrand Lens
3
Q
direction of emergence of the optic axis
A
melatope
4
Q
dark bands
A
isogyre
5
Q
bands of equal birefringence
A
isochrome
6
Q
if NE-SW increase in interference colors
A
uniaxial positive
7
Q
if NW-SE increase in interference colors
A
uniaxial negative
8
Q
when the inside of isogyres increase in interference colors
A
biaxial positive
9
Q
when the outside of the isogyres increase in interference colors
A
biaxial negative
