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  2. Jasper - Wikipedia

    en.wikipedia.org/wiki/Jasper

    Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, [1] [2] is an opaque, [3] impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. Jasper breaks with a smooth surface and is used for ornamentation or as ...

  3. Breccia - Wikipedia

    en.wikipedia.org/wiki/Breccia

    Breccia is composed of coarse rock fragments held together by cement or a fine-grained matrix. [5] Like conglomerate, breccia contains at least 30 percent of gravel-sized particles (particles over 2mm in size), but it is distinguished from conglomerate because the rock fragments have sharp edges that have not been worn down. [6]

  4. Radiolarite - Wikipedia

    en.wikipedia.org/wiki/Radiolarite

    Radiolarites are biogenic, marine, finely layered sedimentary rocks. The layers reveal an interchange of clastic mica grains, radiolarian tests, carbonates and organic pigments.

  5. Chalcedony - Wikipedia

    en.wikipedia.org/wiki/Chalcedony

    Opaque varieties are sometimes referred to as jasper. [4] Fire agate shows iridescent phenomena on a brown background; iris agate shows exceptional iridescence when light (especially pinpointed light) is shone through the stone. Landscape agate is chalcedony with a number of different mineral impurities making the stone resemble landscapes. [9]

  6. Verd antique - Wikipedia

    en.wikipedia.org/wiki/Verd_antique

    Verd antique is very similar in colour to the national gemstone of Ireland, Connemara marble.Connemara marble differs from the verd antiques in that it is an actual marble, rather than a serpentinite breccia, despite also having a very high serpentine content.

  7. How Nutcrackers Became a Classic Symbol of Christmas

    www.aol.com/nutcrackers-became-classic-symbol...

    There are so many enduring symbols of Christmas: the trimmed tree, stockings hung by the chimney with care, and of course, jolly Ol' Saint Nick.But for Ree Drummond, there's one Christmas ...

  8. Detachment fault - Wikipedia

    en.wikipedia.org/wiki/Detachment_fault

    The footwall can transport mylonitic gneisses from lower crustal levels to upper crustal levels, where they become chlorititic and brecciated. [5] The hanging wall, composed of extended, thinned and brittle crustal material, can be cut by numerous normal faults.

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