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Rock Science: Minnesota's Banded Iron Ore | Rock & Gem …
Since the late 1800s, Minnesota's four "iron ranges" have yielded four billion tons of banded iron ore that have provided 90 percent of the nation's iron. The two types of Minnesota's banded iron ore are specularite and taconite. Specularite is a high-grade ore with well-defined, alternating layers of reddish chert and dark, glittery ...
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Rock Science: Minnesota's Banded Iron Ore | Rock & Gem …
Specularite is a high-grade ore with well-defined, alternating layers of reddish chert and dark, glittery hematite; taconite has dark-gray bands and is much lower in grade. They share a common origin and are among the oldest ores ever mined. Two Banded Ore StandOuts Both specularite and taconite are partially altered sedimentary rocks.
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Specularite: Meanings, Properties, Facts, and More
Specularite is a type of quartz composed of tiny, highly reflective particles that create an iridescent effect. It has been used in jewelry since ancient times and is believed to have spiritual significance for many people. Symbolically, it represents hope, optimism, and luck.
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Specularite: Meanings, Properties, Facts, and More
Specularite is an interesting stone that has many meanings and properties. It's known as a birthstone for some zodiac signs, due to its unique characteristics. Specularite is the birthstone of Aquarius, Pisces, Sagittarius, and Scorpio. Its energies are thought to help with intuition, focus, patience, understanding emotions, and expressing ...
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