Making Rock Thin-Sections:09/10 - Hand Grinding & Microscopy

Demonstration using glass plates and powdered grits to polish rock chips and cut-off thin-sections, as well as the important final hand grinding stage and inspection under the microscope to determine when the final thickness of 30 microns has been achieved.

[@cumberlandite56]

Thank you for a wonderful, enjoyable and informative series.

[@gholamhazratahmadi]

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[@canadiangemstones7636]

An excellent presentation!

[@mohamedmed4644]

Hawaryo

[@nasaandtsukasayuzaki705]

great presentation appretiate it

[@malikateeqawan4701]

any job of thin section making petrographic study.

[@cyrusIIIII]

what type of microscope and model do you have?
What is the best microscope if I don't have a thin slice of rock as a sample? I mean what if my samples are just small raw rocks?

[@canadiangemstones7636]

Any low power binocular microscope will be suitable, around 20-60x magnification, with a good light source. Tiny crystals are fascinating under the scope.

[@Mithadon]

Curious to know what material the grits are

[@Epotheros]

Usually it is silica carbide. I would suspect he is using silica carbide in this video. That is the cheapest. Others include aluminum-oxide and diamonds (either polycrystaline or not). A polycrystaline diamond grit provides the best cutting action and will last the longest.

[@amazingthings1396]

Would you rather except some rock fragments and to prepare thin sections for me please? Actually I’m working with some meteorites and I need thin sections but I have not the equipment. I can pay you if can reply to me for each. Thanks

[@gholamhazratahmadi]

Hello, can you send me a meteorite for classification?

[@ahmadalmasri7750]

What are those numbers 60-90 grit

[@canadiangemstones7636]

Size range of the grit particles.

[@alteybali8815]

Goog

[@gholamhazratahmadi]

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