Peridotite is so colourful, no added filters or wave plates are required to make
stunning photographs. See the linked photo at the end.
Photo one is through a 2x objective with crossed polars and the stage
is in the "0" position.
The camera uses a Labomed 10x eyepiece giving 20x of magnification.
Photo two is the same grain with the stage rotated 45° bringing the
central grain to near extinction .
In photo three, the stage is in the "0" position and the Polarizer has been rotated 45°.
I am not a mineralogist so I cannot explain much more than I was observing
interference colours, but I always look for interesting patterns in mineral slides.
What I saw in the rotated Polarizer photo was a fish. Possibly a Grouper
or Sea Bass.
Your opinion may differ.
Please note. This photo is large,
Peridotite, Crossed Polars, 2x obj.
