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Main jade producing countries. Jade is an umbrella term for two different types of decorative rocks used for jewelry or ornaments.Jade is often referred to by either of two different silicate mineral names: nephrite (a silicate of calcium and magnesium in the amphibole group of minerals), or jadeite (a silicate of sodium and aluminum in the pyroxene group of minerals). [1]
The lapidary arts form the core of the Lizzadro Museum's collections, particularly jade carvings including the Altar of the Green Jade Pagoda by Chang Wen-Ti. [7] However, the museum also displays a selection of uncarved gemstones, fossils, and other minerals, as well as sculptures, mosaics, dioramas, and a miniature castle made of carved stone and gold called "Castle Lizzadro" by William ...
The Riverton Site is an archaeological site located immediately west of the Wabash River and northeast of Palestine, Illinois. The site, which dates from the Late Archaic period (3000-1000 BCE), is the type site of the Riverton culture. The Riverton culture, of which only three known sites had been discovered as of 1978, inhabited the central ...
This is a list of archaeological sites on the National Register of Historic Places in Illinois. Historic sites in the United States qualify to be listed on the National Register of Historic Places by passing one or more of four different criteria; Criterion D permits the inclusion of proven and potential archaeological sites . [ 1 ]
The site covers more than 3 acres and extends 30 feet down into the alluvial deposits of the Illinois River valley. Over the course of its excavation between 1969 and 1978, Koster produced deeply buried evidence of ancient human occupation from the early Archaic period (BC 7500) to the Mississippian period (AD 1000).
The sites were located near Mill Creek, Illinois, a village in Union County, located between Jonesboro and Cairo on the Alexander County line. [3] From this collection of sites, known colloquially as the "Indian Diggings", Native Americans quarried, worked into tools and blanks , and exported this stone to the wider Mississippian world.
Jadeite is the principal mineral making up the most valuable form of jade, a precious stone particularly prized in China. Most gem-quality jadeite jade comes from northern Myanmar. Jade tools and implements have been found at Stone Age sites, showing that the mineral has been prized by humans since before the beginning of written history.
A Neolithic polished jadeitite axe head found at Colomiers in southern France. Jadeitite is a metamorphic rock found in blueschist-grade metamorphic terranes.It is found in isolated metasomatically altered rock units within serpentinite associated with subduction zone environments.