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Crystals

Posts about crystals

Borden Formation Lower Mississippian Eastern Kentucky Agate
July 28, 2022

Beautiful Collectible Kentucky Agate

Located in east-central near the town of Irvine is Knob’s Region, a “u” shaped arc extending for nearly 230 miles that is…

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The Storming of the Bastille
July 12, 2022

What Do Bastille Day and Crystallography Have in Common?

July 14, celebrated every year in France as Bastille Day, commemorates the storming and seizure of the notorious medieval armory, fortress, and…

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Goldstone glass under magnification
February 22, 2022

Curious, Glittering Goldstone: Mineral, Crystal, Something Else Altogether?

Goldstone. You know it, that gorgeous with a glittering star field that comes in blue, red, green or purple. It’s used for…

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Corundum
February 15, 2022

The Uncertain Future of Afghanistan’s Mineral Wealth

Poor Afghanistan. It is the country that never seems to catch a break. Remote, poor, land-locked, and yet highly strategic because of…

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Yellow brucite (4.0 × 3.0 × 2.5 cm) from Killa Saifullah, Balochistan, Pakistan.
May 28, 2021

Gorgeous Yellow Brucite Crystal

Brucite is the mineral form of magnesium hydroxide named in 1824 by François Sulpice Beudant for its discoverer, American minerologist and chemist Archibald…

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Dioptase Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia. Pristine and perfect all around. Erik Louw was a miner on the dioptase stope who traded extensively and accumulated one of the finest Tsumeb miniatures collections, purchased in entirety by the Sussmans in the late 1990's. 4 x 4 x 1 cm
May 22, 2021

Beautiful Green Dioptase / Schöne grüne Dioptase / 美しい緑の翠銅鉱

Beautiful Green Dioptase Dioptase is an unusual mineral that is highly desired for its intense Emerald green color.  It is a copper…

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Amethyst intaglio portrait of Julius Caesar, Roman, 50-40 B.C.E.
March 21, 2021

Beautiful Bejeweled Amethyst’s History as an Art Medium

The February birthstone is amethyst. A form of non-fluorescing hard stone quartz whose typically purple shading comes from irradiation of iron or…

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Photograph of the holotype of Zhouornis hani, a type of Enantiornithes
March 12, 2021

Short Crystal: Quartz and the Fossilized Bird

A recent study in Frontiers in Earth Science reveals that researchers discovered quartz crystals in the stomach of a bird that lived…

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Malachite from Zaire
January 26, 2021

This Week’s Mineral Spotlight: Gorgeous Green Malachite

If the mineral is green and gorgeous there is a good chance it’s malachite. Like its copper cousins Turquoise, Azurite, and Chrysocolla,…

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sodalite mineral specimen
January 13, 2021

This Week’s Mineral Spotlight: Beautiful Blue Sodalite

Sodalite is a gorgeous mineral that occurs in igneous rock. Sodalite’s distinctive color ranges from royal blue to light blue and white, and is oftentimes confused with lazurite and lazulite. It’s name derives from the sodium content of the mineral. It is sometimes fluorescent, usually when the material is grayer and paler in color. …

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