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Hiddenite is a pale-to-emerald green variety of spodumene that is sometimes used as a gemstone. The first specimens of the hiddenite variety of spodumene were recovered circa 1879 near the settlement of White Plains, west of Stony Point , Alexander County, North Carolina .
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, Li Al(Si O 3) 2, and is a commercially important source of lithium.It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green hiddenite, prismatic crystals, often of great size.
This a public gem mine located in the Piedmont of North Carolina in Alexander County, specifically in the town of Hiddenite. [2] At the mine, more than 63 different types of gems and minerals can be found including emeralds, amethyst, sapphire, aquamarine, topaz, garnet, as well as the stone Hiddenite, which is a stone only found in this local ...
Actinolite. Nephrite (var.); Adamite; Aegirine; Afghanite; Agrellite; Algodonite; Alunite; Amblygonite; Analcime; Anatase; Andalusite. Chiastolite; Andesine ...
MeasuringWorth is a free online service to calculate relative economic value over time using price indexes. It has data sets, charts, and comparators for prices in several currencies and economic time series for stock markets and the price of gold. The site's comparisons over time were used in over 200 academic works each year in 2018 and 2019. [1]
Made in Japan, this was also the first calculator to use an LED display, the first hand-held calculator to use a single integrated circuit (then proclaimed as a "calculator on a chip"), the Mostek MK6010, and the first electronic calculator to run off replaceable batteries. Using four AA-size cells the LE-120A measures 4.9 by 2.8 by 0.9 inches ...
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison.
A total of 40,000 units were sold; 90% of them in the United States where the sale price was $3,200 [4] (increasing to about $3,500 in 1968. [ 7 ] ) About 10 [ 19 ] Programma 101 were sold to NASA and used to plan the Apollo 11 landing on the Moon.