Jasper

Jasper
Jasper
General
Category	Mineral
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Varieties of jasper

Red jasper rough, Cave Creek, Arizona
Dull red jasper veined with white quartz, rough, provenance: uncertain – possibly Crimea or Kyrgyzstan
Brecciated red jasper tumbled smooth, 1 in (2.5 cm)
Red-green-and-yellow jasper cabochon, Cherry Creek, China
Brecciated yellow-and-green jasper, cut and polished, Kara Dag, Crimea
Brecciated yellow jasper, cut and oiled
Green-yellow-and-orange polished jasper boulder, Tropical Parc, musée des mineraux, Saint-Jacut-les-Pins, Brittany
Green-and-red jasper pebble with areas of grey, translucent chalcedony, Aomori Prefecture, Shichiri Nagahama, Japan
Cabochon of Tabu Tabu jasper (brecciated, with angular clasts cemented by grey chalcedony) South Africa
Jasper variety bloodstone, provenance doubtful, possibly Deccan Traps India
Multi-coloured, banded jasper rough, Montjuïc, Barcelona
Kaleidoscope jasper rough, Oregon
Poppy jasper (an orbicular jasper from Morgan Hill, California), rough
Poppy jasper: small, polished slabs, Morgan Hill, California
Orbicular "ocean jasper" (not, strictly, a jasper, but a highly silicified rhyolite or tuff) Analalava District Madagascar, polished slab
Orbicular "ocean jasper", 5 cm (2.0 in), Analalava District, Madagascar
Bruneau jasper, Idaho (this jasper occurs within thundereggs), A. E. Seaman Mineral Museum
"Mookaite" (a radiolarian chert from the Windalia Radiolarite Formation, Western Australia), rough
Biggs jasper, Oregon
"Dalmatian jasper" – not a jasper at all but a form of the igneous rock perthite. The black spots are composed of the rare amphibole arfvedsonite (and not, as often claimed, of tourmaline). Polished pebble.

Footnotes

References

External links

"Jasper" . Encyclopedia Americana. 1920.
"Jasper" . Encyclopædia Britannica. Vol. 15 (11th ed.). 1911. p. 279.