he·​ma·​tite ˈhē-mə-ˌtīt How to pronounce hematite (audio)
: a reddish-brown to black mineral consisting of ferric oxide, constituting an important iron ore, and occurring in crystals or as earthy red ocher
hematitic adjective

Example Sentences

Recent Examples on the Web Fahrenheit, yellow ochre’s crystal structure changes and the goethite can transform into hematite, or red ochre. Gemma Tarlach, Discover Magazine, 15 Mar. 2018 Upon microscopic imaging, scientists conclude that the rock contains the mineral hematite, which is often formed in water (although it can also be formed by volcanic processes). Aline Reynolds, Discover Magazine, 19 Feb. 2010 Made of white jade, amazonite, blue moonstone and hematite, this durable bracelet is made of all real crystals and is handcrafted in Arizona. Cailey Lindberg, Good Housekeeping, 18 Oct. 2022 More than 12,000 years ago, the first inhabitants of present-day eastern Wyoming came across a fruitful deposit of hematite, or red ocher, and began digging out the valuable, blood-red mineral using animal bones and antlers. Sarah Kuta, Smithsonian Magazine, 24 May 2022 No new hematite is being formed today, Lacefield said, because that ancient bacteria is no longer around. Dennis Pillion | Dpillion@al.com, al, 1 Dec. 2021 The rust comes from iron on the lunar surface oxidating into lunar hematite. Jamie Carter, Forbes, 20 Sep. 2021 So, all in all, Mars is red because of hematite, which is a red form of ferric oxide. Ethan Siegel, Forbes, 11 Mar. 2021 Like on Mars, the red color of the Tséyi’ rocks derive from the mineral hematite, and the canyon was carved into the sandstone by running water, once abundant also on the Red Planet. David Bressan, Forbes, 12 Mar. 2021 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hematite.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1540, in the meaning defined above

Time Traveler
The first known use of hematite was in 1540

Dictionary Entries Near hematite

Cite this Entry

“Hematite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hematite. Accessed 6 Jun. 2023.

Kids Definition


he·​ma·​tite ˈhē-mə-ˌtīt How to pronounce hematite (audio)
: a mineral that consists of an oxide of iron, is an important iron ore, and is found in crystals or in a red earthy form

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