enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Tantalite - Wikipedia

    en.wikipedia.org/wiki/Tantalite

    The mineral group tantalite [(Fe, Mn)Ta 2 O 6] is the primary source of the chemical element tantalum, a corrosion (heat and acid) resistant metal. It is chemically similar to columbite , and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides.

  3. Coltan - Wikipedia

    en.wikipedia.org/wiki/Coltan

    Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium's original American name columbium), and the tantalum-dominant mineral is tantalite. [1]

  4. Tantalum - Wikipedia

    en.wikipedia.org/wiki/Tantalum

    Tantalite (Fe, Mn)Ta 2 O 6 is the most important mineral for tantalum extraction. Tantalite has the same mineral structure as columbite (Fe, Mn) (Ta, Nb) 2 O 6; when there is more tantalum than niobium it is called tantalite and when there is more niobium than tantalum is it called columbite (or niobite).

  5. Stibiotantalite - Wikipedia

    en.wikipedia.org/wiki/Stibiotantalite

    Stibiotantalite is primarily used as a gemstone. [4] These gems are vivid, shiny, and golden-brown. These gems come between 0.73 carats and 6.34 carats, with the average being 3.54. These gems are similar in appearance to sphalerite, but they are brown instead of orange. While stibiotantalite and tantalite are similar, stibiotantalite is softer ...

  6. Gemstone Meanings: Power and Significance of the 25 Most ...

    www.aol.com/gemstone-meanings-power-significance...

    Gemstone meanings are inspired by everything from royal traditions and chakras to ancient cultures and spiritual thoughts. “The myriad of colors of gemstones alone transmit energy via the ...

  7. Columbite - Wikipedia

    en.wikipedia.org/wiki/Columbite

    Columbite, also called niobite, niobite-tantalite and columbate, with a general chemical formula of (Fe II,Mn II)Nb 2 O 6, is a black mineral group that is an ore of niobium. It has a submetallic luster, a high density, and is a niobate of iron and manganese. Niobite has many applications in areospace, construction and the medical industry.

  8. Portal:Minerals - Wikipedia

    en.wikipedia.org/wiki/Portal:Minerals

    After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions may indicate that the stone has been treated. Ruby is the traditional birthstone for July and is usually red/pinker than garnet , although some rhodolite garnets have a similar pinkish hue to most rubies.

  9. The Secret Birthstone Meanings Behind Your Stone - AOL

    www.aol.com/secret-birthstone-meanings-behind...

    For premium support please call: 800-290-4726 more ways to reach us