فیلم های علمی و آموزشی

Lustre (mineralogy)

Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral.The word traces its origins back to the latin lux, meaning "light", and generally implies radiance, gloss, or brilliance.A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky.Similarly, the term vitreous refers to a glassy lustre. ---Image-Copyright-and-Permission--- License: Public domain ---Image-Copyright-and-Permission--- This channel is dedicated to make Wikipedia, one of th

Petrology-Mineralogy Characterisation Facility

Sara Russell and Farah Ahmed describe the Petrology-Mineralogy Characterisation Facility, located at the Mineral and Planetary Sciences Division, Natural History Museum, London, UK This facility provides world leading sample characterization instrumentation and methodologies. The facility focuses on computed tomography (CT) and X-ray diffractometry (XRD). Acknowledgement: Europlanet 2020 RI has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement

Optical Mineralogy birds-eye extinction muscovite biotite

Muscovite and biotite in cross-polarized light, showing distinctive birds-eye (mottled) extinction. Brief images in plane-polarized light show distinguish muscovite (clear) from biotite (brown)

Earth Materials Lab 3 Beginning Optical Mineralogy

Earth Materials Lab 3 Beginning Optical Mineralogy

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