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  2. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    Blue chalcedony (1967) Nevada [46] [47] Metal: Silver (1977); Nevada's nickname is the Silver State: Sandstone (1987) Precious Gemstone: Virgin Valley black fire opal (1987) Semiprecious Gemstone: Nevada turquoise (1987) New Hampshire [48] Beryl (1985) Granite (1985); New Hampshire's nickname is the Granite State: Smoky quartz (1985) New Jersey ...

  3. Baraboo Quartzite - Wikipedia

    en.wikipedia.org/wiki/Baraboo_Quartzite

    Baraboo Quartzite is a Precambrian geological formation [1] of quartzite, found in the region of Baraboo, Wisconsin. While pure quartzite is usually white or gray, Baraboo Quartzite is typically dark purple to maroon in color, due to the presence of iron ( hematite ) and other impurities. [ 2 ]

  4. List of quarries in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_quarries_in_the...

    Magothy Quartzite Quarry Archeological Site, Pasadena, Maryland, NRHP-listed, Quartzite and sandstone quarries of the Woodland period Seneca Quarry , Seneca, Maryland, NRHP-listed, source of Seneca red sandstone used in two Potomac River canals: the Potowmack Canal (opened in 1802, and officially known as the Great Falls Skirting Canal) on the ...

  5. Dave Lewis (American musician) - Wikipedia

    en.wikipedia.org/wiki/Dave_Lewis_(American_musician)

    David Eugene Lewis (1938 – March 13, 1998) was an American rock and rhythm & blues (R&B) keyboardist, organist, and vocalist based in Seattle, Washington, US. Peter Blecha accounts his Dave Lewis Combo as "Seattle's first significant African American 1950s rock and roll band" [2] and Lewis himself as "the singularly most significant figure on the Pacific Northwest's nascent rhythm & blues ...

  6. Aventurine - Wikipedia

    en.wikipedia.org/wiki/Aventurine

    Aventurine feldspar or sunstone can be confused with orange and red aventurine quartzite, although the former is generally of a higher transparency. Aventurine is often banded and an overabundance of fuchsite may render it opaque, in which case it may be mistaken for malachite at first glance.

  7. Eureka Quartzite - Wikipedia

    en.wikipedia.org/wiki/Eureka_Quartzite

    Cliff-forming quartzite, the principle part of the Eureka, is composed of more than 99 percent quartz, which includes both the sand grains and the cement that binds them. [6] The quartz cement accounts for its outstanding hardness and resistance to erosion. Minor constituents are grains of zircon and tourmaline and a trace of feldspar. [6]

  8. Chalcedony - Wikipedia

    en.wikipedia.org/wiki/Chalcedony

    Chalcedony's standard chemical structure (based on the chemical structure of quartz) is SiO 2 (silicon dioxide). Chalcedony has a waxy luster, and may be semitransparent or translucent. It can assume a wide range of colors, but those most commonly seen are white to gray, grayish-blue or a shade of brown ranging from pale to nearly black.

  9. Chlorite group - Wikipedia

    en.wikipedia.org/wiki/Chlorite_group

    Quartz crystal with chlorite inclusions from Minas Gerais, Brazil (size: 4.2 × 3.9 × 3.3 cm) Chlorite is a common mineral, found in metamorphic, igneous, and sedimentary rocks. It is an important rock-forming mineral in low- to medium-grade metamorphic rock formed by metamorphism of mafic or pelitic rock. [9]

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