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Orbicular jasper from Madagascar. Orbicular jasper is a variety of jasper which contains variably-colored orbs or spherical inclusions or zones. In highly silicified rhyolite or tuff, quartz and feldspar crystallize in radial aggregates of needle-like crystals which provide the basis or seed for the orbicular structure seen in this kind of jasper. [1]
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.
Biggs jasper is a variety of the mineral jasper. It is a "picture jasper" – a jasper that exhibits particular patterns and colors – and is used as an opaque gemstone . [ 1 ] It exhibits intricate, shell- or layer-like patterns in shades of brown ranging from beige to dark brown.
Tree Atlas of Namibia; A Preliminary List of Trees, Shrubs and Lianes of Transvaal and Swaziland - J. M. Anderson, P. A. Venter (1977) Trees of Southern Africa - Keith Coates Palgrave (1977) Field Guide to Trees of Southern Africa - van Wyk & van Wyk (1997) Trees of Natal, Zululand and Transkei - Elsa Pooley (1993)
Hura crepitans, the sandbox tree, [2] also known as possumwood, monkey no-climb, assacu (from Tupi asaku) and jabillo, [3] is an evergreen tree in the family Euphorbiaceae, native to tropical regions of North and South America including the Amazon rainforest. It is also present in parts of Tanzania, where it is considered an invasive species. [4]
TORONTO (Reuters) -A 24-year-old firefighter was killed by a falling tree while battling a forest blaze northeast of Jasper in the Western Canadian province of Alberta on Saturday, the police said ...
Jasperoid is a rare, peculiar type of metasomatic alteration and occurs in two main forms; sulfidic jasperoids and hematitic jasperoids. True jasperoids are different from jaspillite, which is a form of metamorphosed chemical sedimentary rock, and from jasper which is a chemical sediment.
This is a list of plantations and/or plantation houses in the U.S. state of Mississippi that are National Historic Landmarks, listed on the National Register of Historic Places, listed on a heritage register, or are otherwise significant for their history, association with significant events or people, or their architecture and design.