Mineralogical and Geological Museum, Harvard University

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Mineralogical and Geological Museum, Harvard University

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The Mineralogical & Geological Museum at Harvard University (MGMH) is committed to the development and preservation of world-class collections of minerals, rocks, ores, meteorites and gems for research, education, and public display.

02/27/2026

A witnessed fall June 28th 1911 in Al Buhayrah, Egypt. Not until 1983 was it recognized as a martian meteorite. Further research on the hydrous minerals in the meteorite provides evidence which supports a formerly wet Mars.

01/22/2026

Jaspilite, an ore of iron from Ishpeming, Michigan. Mostly composed of hematite, quartz, and magnetite. This sample is very weakly magnetic. This specimen is from a suite of samples collected by the USGS ~1890 illustrating the Marquette Iron-Bearing District of Michigan.

01/08/2026

Just a peak behind the scenes.

12/19/2025

Petzite with gold from Bald Mountain, Sonora, California. Petzite is a mineral that contains gold, silver, and tellerium, despite it containing gold and silver, it's typically a dark grey to black in color, but it does tend to be metallic. It's often found with gold ✨️

Catalogue Number: 2022.4. 4050S
Feinglos Collection

12/18/2025

12/11/2025

Last weeks post by reminded us of minerals that you REALLY shouldn't eat.

11/20/2025

Agates!

Specimen : 128601, 127375, 88439, 131362

11/19/2025

A couple of highlights from our agate collection, which are so complex looking, but mostly quartz! Which is your favorite? We will take a better picture of your favorite and post tomorrow.

11/13/2025

Cobaltian calcite from Tsumeb Namibia. Can you guess what causes it to be pink?

Specimen # 2022.4.1657L

10/31/2025

WARNING, for this Halloween, we're talking about a murder.

In 1849 Harvard was shaken by the murder of Dr. George Parkman, a respected alumnus and benefactor. His killer - Dr. John White Webster, a Harvard Chemistry Professor and Curator of the Mineral Collection - was convicted in what became the nation's first celebrity murder trial. It was also one of the first cases to use forensic evidence (search for George Parkman Dentures).

This mineral was found in Webster's tea chest along with... parts of Dr. Parkman 💀

10/30/2025

It's Tsumeb Thursday! Check out Tsumeb Mine Notebook (tmn.fas.harvard.edu) for all things Tsumeb.

Mineral species: wulfenite, azurite, malachite, and dundasite

Object Number: 2022.4.2234L

Tsumeb Mineral Collectors

Address

24 Oxford Street
Cambridge, MA
02132

Website

https://mgmh.fas.harvard.edu/, https://tmn.fas.harvard.edu/

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