Pictures and descriptions of rocks and soil collected by Apollo astronauts on the lunar surface and returned to Earth.
While conducting research for the online rockhounding adventures, I came across a web page published by the New York State Museum. As they ...
Some observations and illustrations for amateur microscopy enthusiasts.
A “thin section” of rock is a sample that is mounted to a microscope slide and cut so thin that you can see light through it. The process of creating a thin section is a blend of artistry, technology and science. The art of preparing thin sections has been critical to understanding the core samples that scientists are observing. Thin section samples allow scientists to observe minerals in rocks, their crystal structure and texture at a microscopic level. Want to revise how do geologists study rock? Follow this link to see our blog on "Studying Rock". In this blog, we're taking you into the journey of thin section photos that were captured and given by students and young professionals from Finland, Ireland, Denmark, Czech Republic and Plymouth (UK). Again our purpose is to encourage students and professionals' research by promoting "learning and scope" of Geology through our blogs. Help us to help others in learning and understanding geology. See this link that how you can contribute to Learning Geology. Note: We are using following thin section photos by having permission from their owners. If you like to use these photos, leave us a message or email us here. 1. A beautiful heart shaped hornblende in XPL (cross polarized light) view.It is a thin section of basalt with some secondary mineralization in the vesicles. Plagioclase is present in the form of black and white matrix and large phenocryst (with some zoning). Alignment of plagioclase grains is indicative of the "flow" of magma. Photo Credits: Astaley 2. Thin Section of a Biotite and Muscovite, XPL view Photo Courtesy: Laura 3. Thin Section of a Plagioclase (orthoclase) and Pyroxene, XPL Photo Courtesy: Laura 4. Eclogite in Thin Section, XPL Photo Courtesy: Laura 5. Cummulate Rock with Pyroxene and plagioclase, XPL Photo Courtesy: Laura 6. Blueschist, XPL Photo Courtesy: Laura 7. Agglomerate in a Thin Section, XPL view Agglomerates are pyroclastic igneous rocks that consist almost wholly of angular or rounded lava fragments of varying size and shape. Fragments are usually poorly sorted in a tuffaceous matrix, or appear in lithified volcanic ash. (Britannica.com) Photo Courtesy: Laura 8. Thin Section of a Pigeonite and Olivine, XPL Photo Courtesy: Laura 9. Olivine phenocryst in Basaltic Lapilli, XPL Photo Courtesy: Laura 10. Thin Section of a Gabbro, XPL Showing minerals; Pyroxene and Olivine, plagioclase and others. Learn more about Gabbro here. Photo Courtesy: Laura 11. Another beautiful thin section of a Gabbro, XPL Photo Courtesy: Laura 12. Thin Section of a Greenschist, XPL Photo Courtesy: Laura 13. Thin Section showing intrusion of rocks from magma chamber into country rocks, XPL Photo Courtesy: Jack Lewis Donnelly 14. Thin Section of a Sillimanite - a mineral found in rocks formed by the metamorphism of a mudstone. (XPL view) Photo Courtesy: Jack Lewis Donnelly 15. Microgeode in ultrabasic vulcanite (a rare copper telluride mineral), 30 µm thin section, PPL and XPL Photo Courtesy: Petr Hyks Photo Courtesy: Petr Hyks See original photo here 16. Muscovite & biotite (30 µm thin section, PPL and XPL) Photo Courtesy: Petr Hyks Photo Courtesy: Petr Hyks Same photo in XPL view. See original photo here 17. Quartz and epidote (30 µm thin section, PPL and XPL) Photo Courtesy: Petr Hyks Photo Courtesy: Petr Hyks See original here. 18. Olivine (30 µm thin section, PPL and XPL) Photo Courtesy: Petr Hyks See this photo here on Petr Hyks' website 19. Zircons in biotite (30 µm thin section, PPL views, showing extinction) Photo Courtesy: Petr Hyks See this photo here on Petr's website 20. Zircon in biotite (30 µm thin section, XPL) Photo Courtesy: Petr Hyks See this photo here on Petr's website 21. Kyanite surrounded by muscovite (30 µm thin section, PPL and XPL) Photo Courtesy: Petr Hyks See these photos on Petr's page here and here 22. Zircon crystal in chloritized biotite (30 µm thin section, PPL and XPL) Photo Courtesy: Petr Hyks See these photos on Petr's page here and here Petr Hyks is 21 year old geology student from Masaryk University in Brno (Czech Republic). He has uploaded 5000+ photos about geology, astronomy and meteorology on his Flickr page. Follow this link to visit his website. Thank you Petr for contributing to Learning Geology and helping others to learn geology through your thin section photos. 🙂 Now following 10 thin section photos are from a geology student of University of Helsinki, Finland. 23. Thin Section of Olivine Diabase in XPL and PPL view. Photo Courtesy: GeoAmethyst 24. Thin Section of Basalt in XPL view Having minerals: Olivine (in center) plagioclase, pyroxene and other accessory minerals Photo Courtesy: GeoAmethyst 25. Thin Section of a Trachyte, XPL view Trachyte is an igneous volcanic rock with aphanitic to porphyritic texture. It is volcanic equivalent of Syenite. Major or essential minerals are alkali feldspar with less amount of plagioclase, quartz or feldspathiod. Photo Courtesy: GeoAmethyst 26. Thin Section of a Harzburgite, XPL view Harzburgite is an ultramafic igneous rock. It chiefly contains plagioclase (under 10%) , olivine, orthopyroxene (enstatite), clinopyroxene (diopside) and biotite. There could be a small amount of talc, carbonate, tremolite, cummingtonite, chlorite, serpentine and titanite. Photo Courtesy: GeoAmethyst 27. Another thin section of Harzburgite, XPL view Photo Courtesy: GeoAmethyst 28. Thin Section of Pyroxenite (an ultramafic igneous rock), XPL view Photo Courtesy: GeoAmethyst 29. Thin Section of Trachyte showing Sandine mineral in center, XPL view Photo Courtesy: GeoAmethyst 30. Thin Section of Andesite, XPL view It is an extrusive igneous, of intermediate composition, with aphanitic to porphyritic texture. Here this thin section is showing chiefly hornblende and plagioclase. Photo Courtesy: GeoAmethyst 31. Thin Section of Alkali Basalt (silica undersaturated) in XPL view. Photo Courtesy: GeoAmethyst 32. Thin Section showing small clinopyroxene grains within orthopyroxene Photo Courtesy: GeoAmethyst Like this article? Leave a comment down or send us your valuable suggestion or feedback here to help us in improving this article. Useful Websites: 1. Polarized light Microscopy (Image Gallery) 2. How to make a thin section 3. Petrographic thin section preparation 4. Guide to Thin Section Microscopy 5. Index of Minerals in Thin Section 6. Optical Petrography website by an Italian Geologist 7. Carbonate Thin Section Images and Exercises
Olivine in XPL
PROSES PEMBENTUKAN BATUAN METAMORF SERTA TIPE-TIPE METAMORFISME A. Proses Pembentukan Batuan Metamorf Batuan metamorf merupakan batuan hasil malihan dari batuan yang telah ada sebelumnya yang ditunjukkan dengan adanya perubahan komposisi mineral, tekstur dan struktur batuan yang terjadi pada fase padat (solid rate) akibat adanya perubahan temperatur, tekanan dan kondisi kimia di kerak bumi (Ehlers and…
developed a parameter-free method to optimize the cross-sectional shapes of thin-walled structures. They specifically minimized the
Rock sample page for Gabbro with chromite band
Scientists used autoradiography to analyse the density of receptors for neurotransmitters on very thin in vitro brain sections.
Mantle rocks for sale, kimberlites, carbonatites, Earth's rarest mineralogy, Earth's rarest minerals, petrology thin sections, Canadian kimberlites, Australian kimberlites.
Mantle rocks for sale, kimberlites, carbonatites, rare earth mineralogy, petrology thin sections, Earth's rarest mineralogy, Earth's rarest minerals, Canadian kimberlites,.
Three L-shaped structural sections with wafer-thin edges wrap around concrete external walls and glazed internal partitions at this house in Shunan.
This section discusses the Quaking Aspen tree and illustrates digital images taken through the microscope of stained thin sections of wood cut from a sample tree.
Add a touch of edge and movement to your thin hair with the Wispy Shaved Undercut. This haircut’s wispy layers and shaved or closely trimmed sections create a dynamic and bold appearance.
I recently unearthed a notebook from my college mineralogy course. In it, I had painstakingly sketched dozens of microscopic thin sections of rocks and minerals. I still find the lines, the shapes...
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In the mid-20th century, San Antonio-born artist Rudolf Staffel pioneered porcelain as a medium for artistic expression with his translucent "light gatherers," fragile-looking ceramic sculptures that allowed light to shine through thin, luminous sections for a glowing, otherworldly effect.
Pair of short curtains of cream colored silk, embroidered in silk of same shade. Long thin lines of attenuated design, vaguely leaf-like in upper heavier sections; worked around net insertion. Curved at upper corner, at one side, and fitted across curve with small brass rings.
In South Korea there are four sections. Four rich families own their own sections, maintaining order and peace. Some are enemies and some are allies. What of m...
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