#petrography

[grittyghoul]

I made these petrography affirmations

[amethysthands]

I <3 minerals

[srlgemstone]

Limb Cast -Agatized Petrified Wood Log

[mineralsandsomerocks]

Native Silver (tarnished yellow) overgrown by Nickeline (pink) and Rammelsbergite (whitish grey rim on Nickeline) and Gersdorffite (light grey, euhedral crystals) and partially replaced by intergrown Acanthite (dull, scratched grey) and Stephanite (slightly lighter, "cleaner" grey)

Locality: Easter-Duffy Deposit, Greater Slave Lake, Northwest Territories, Canada

Plane Polarized Reflected Light, 50X Magnification

Have not had time to take new pictures of my newer rocks, as I have been super busy working on my MSc, so I thought I would upload some reflected light images from my thesis! If it seems like these are something folks want to see, I have loads more where this came from. Plus tumblr has a lack of reflected light microscopy images anyways. Feel free to reach out if you have any questions about this stuff!

[perfectcleavage]

Monte Duria Peridotite

One of my favorite thin section samples in our lab. Pyroxene with exsolution lamellae and some stunning berlin blue chloritization.

[noosphe-re]

Petrography is a branch of geology concerned with the analysis and characterization of rocks and minerals. The macroscopic characteristics of rocks and geological materials visible in outcrop, core, or hand sample can be difficult to describe accurately and fully. Macroscopic observations usually suffice for preliminary classification, however much more information is generally available when observed at the microscopic scale. https://www.microanalysis.com.au/services/petrography/

[rafamonzo]

From the series : “Interpreting the Silent Artefacts” / R.Tanaka

http://rafamonzo.tumblr.com   / http://tanaka-clan.tumblr

[microscope-world]

Feldspar captured under the ZEISS Axiolab polarizing microscope.