Definitions

from The Century Dictionary.

  • noun A hydrous silicate of glucinum, occurring in minute orthorhombic crystals in pegmatite near Nantes in France.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A basic beryllium sorosilicate that is an ore of beryllium.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Bertrand +‎ -ite, named after French mineralogist Émile Bertrand (1844-1909) in 1883.

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Examples

  • In addition to being found in beryl, beryllium is found in the mineral bertrandite Be4Si2O7 (OH) 2, which in recent years has become a major ore of this element, in addition to beryl.

    Beryllium 2007

  • A Colorado company wants to drill on a nearby ranch in search of bertrandite that could be mined for beryllium, a rare metallic element used in everything from nuclear reactors to golf clubs.

    mjh's blog — 2005 — June 2005

  • Beryllium — which can be extracted from bertrandite ore — is used as a metal in nuclear weapons and reactors, x-ray machines and space vehicles.

    mjh's blog — 2005 — June 2005

  • Great Western Exploration LLC of Windsor, Colo., … has applied for a “minimal impact” permit to drill five 2,000-foot-deep exploratory holes and test the core samples for bertrandite ore.

    mjh's blog — 2005 — June 2005

  • BE has submitted a Subpart 4 Application for a Non-Minimal Impact Exploration Permit to the Mining and Minerals Division (MMD) in New Mexico to drill 5 exploratory boreholes for bertrandite at the Sullivan Ranch (Warm Springs) site.

    Marketwire - Breaking News Releases 2010

  • Here on Earth, most of the beryllium exists in minerals such as beryl and bertrandite.

    SpaceRef Top Stories 2009

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