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Ohfuji Lab
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The lab traces how mineral crystals form, observing them with electron microscopes down to the nanometer scale.
AboutAbout the lab
From tiny crystals to the large workings of the Earth.
The Ohfuji Lab studies where and how minerals form, and by what mechanisms they become crystals.
Using electron microscopes, the lab observes natural samples and experimentally synthesized samples in fine detail down to the nanometer scale, examining their structures and chemical compositions.
From fieldwork to microscope observation, the lab pursues the question "why?" at many different scales.
By connecting information obtained from tiny regions to an understanding of large-scale geological phenomena, the lab aims to find the universal physics and chemistry that underlie them.
Key terms
- Nanometer
- A length equal to one millionth of a millimeter. About the size of a few atoms lined up in a row.
- Electron microscope
- An instrument that shines electrons instead of light onto a sample to observe fine structures that cannot be seen with an ordinary microscope.
- Potassium feldspar
- A feldspar mineral that contains potassium. It is abundant in rocks such as granite.
ResearchResearch themes
Using electron microscopes, the lab examines the structures and chemical compositions of natural and experimentally synthesized samples down to the nanometer scale, aiming to clarify the origin and genesis of minerals and the mechanisms of crystallization. The research spans a wide range of scales, from fieldwork to microscope observation.
*Illustrative imageMineral Crystallization and Life and Organic Matter
The lab reads from the structures on the surfaces and inside of minerals how they formed. In many cases, microorganisms and organic matter play an important role in the settings where natural minerals form, and the lab also investigates these relationships in detail.
*Illustrative imageOrigin and Genesis of Diamonds
The lab investigates the possibility that methane-rich fluids are involved when diamonds form deep in the mantle, using both analysis of natural samples and high-pressure experiments. It also examines the origin of diamonds found in Japan.
*Illustrative imageApplied Research Using Mineralogy
The lab applies the knowledge and methods of mineralogy and crystallography to materials science, environmental science, and agricultural science. It is conducting research on using potassium, a nutrient for plants, as a resource from unused potassium feldspar and granite.
MembersFaculty
- ProfessorHiroaki OhfujiPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Pyrite in pyrrhotite SEM image” Boris Lobastov / CC BY 4.0 (cropped)
- Mineral Crystallization and Life and Organic Matter: “Pyrit auf Holz” Koelle at German Wikipedia / CC BY-SA 3.0 (cropped)
- Origin and Genesis of Diamonds: “Octahedral diamond (Mir Kimberlite; Mirnyy, Siberia, Russia) )” James St. John / CC BY 2.0 (cropped)
- Applied Research Using Mineralogy: “OrthoclaseBresil” Didier Descouens / CC BY-SA 4.0 (cropped)
- Related lab (Tajika Lab): “Snowball Huronian” Oleg Kuznetsov - 3depix - http://3depix.com/ / CC BY-SA 4.0 (cropped)
- Related lab (Takigawa Lab): “Allende meteorite ( )” Steve Jurvetson / CC BY 2.0 (cropped)
- Related lab (Uno Lab): “Big garnet amphibolite (Precambrian; Warrensburg, Adirondack Mountains, New York State, USA) 26” James St. John / CC BY 2.0 (cropped)
- Related lab (Maeno Lab (Volcano Research Center)): “Shinmoe-dake Volcano Erupts on Kyushu Feb 2011” Robert Simmon / Public domain (cropped)
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