Half way up the learning curve.
Posted: Sat Jun 20, 2015 10:20 pm
Eight preliminary thin section slides.
The presentation shows the preliminary results of making eight thin section slides from mostly domestic rocks.
Domestic in that I picked them up while out walking along the local creek.
The slides need further grinding and polishing to achieve the 30 micron "ideal" thickness. Most are between 50-80 microns. Transparent, but not quite thin enough.
Two exceptions are the Landscape Marble sample 2 at 35 microns and the Sea Shell fragment at 45 microns. It is not possible to grind and polish the sea shell fragment any thinner. I tried and ended up with a highly polished spot of epoxy.
Unless I get too carried away with grinding and polishing, there should be a follow up with cleaner images. Minus the sea shell.
Notes about the specimens.
As stated many times, I am not a geologist. The names on the slides are essntially the colour of the rock when I picked it up.
The Landscape Marble is one of those white rocks you use for growing weeds in a flowewr bed.
The Hobby Rocks are the tiny little stones you get in landscaping kits when building model houses.
The Renovation Rubble is a piece of broken concrete from an apartment renovation.
All of the photos were taken with a Canon 5D MkII camera, a Meiji 2.5x photo lens and the Labomed microscope.
Click to view eight preliminary thin section slides
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The presentation shows the preliminary results of making eight thin section slides from mostly domestic rocks.
Domestic in that I picked them up while out walking along the local creek.
The slides need further grinding and polishing to achieve the 30 micron "ideal" thickness. Most are between 50-80 microns. Transparent, but not quite thin enough.
Two exceptions are the Landscape Marble sample 2 at 35 microns and the Sea Shell fragment at 45 microns. It is not possible to grind and polish the sea shell fragment any thinner. I tried and ended up with a highly polished spot of epoxy.
Unless I get too carried away with grinding and polishing, there should be a follow up with cleaner images. Minus the sea shell.
Notes about the specimens.
As stated many times, I am not a geologist. The names on the slides are essntially the colour of the rock when I picked it up.
The Landscape Marble is one of those white rocks you use for growing weeds in a flowewr bed.
The Hobby Rocks are the tiny little stones you get in landscaping kits when building model houses.
The Renovation Rubble is a piece of broken concrete from an apartment renovation.
All of the photos were taken with a Canon 5D MkII camera, a Meiji 2.5x photo lens and the Labomed microscope.
Click to view eight preliminary thin section slides
- Renovation Rubble. 10x obj.
- Ruble#13_5MLX_10x_06-Edit.jpg (93.21 KiB) Viewed 4345 times