Rocks magnified videos
Here are some short videos taken with a proscope at 25X. They show rocks with different properties. The names I assigned them are a best guess.
- The videos can be played at .5 speed to see better (Click the >> to change speed)
- They can also be paused to view, but when paused the image dims.
- Hopefully you can find your own samples.
- Notice the grains of sand in the red and black sandstone compared to the smooth surface in the calcite.
- Compare the size of particles in the sandstones to the those in the clay.
- Can you match them with these rocks.
Sandstone?
What properties do you notice.
Black Sandstone?
What properties do you notice.
Calcite?
What properties do you notice.
Clay?
What properties do you notice.
Dolomite?
What properties do you notice.
Rib?
What properties do you notice.
Grey Sandstone?
What properties do you notice.
Iron Pyrite, fool's gold?
What properties do you notice.
Lava?
Notice the holes from which gase escaped?
Mica?
Notice the thin layers of transparent mica?
Milky quartz?
What properties do you notice?
Obsidian?
Notice any sharp edges?
Petrified wood?
Notice wood grain and clumps of minerals?
Pink Feldspar?
What properties?
Pumice?
What properties?
Petrified wood?
What properties?
Red quartz?
What properties?
Red sandstone?
What properties?
Talc?
What properties?
What?
What properties?
White _ ?
What properties?
Black streak?
What properties?
