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^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...
The Homestake Mine pit in Lead, South Dakota Typical auriferous (gold-bearing) greenschist gold ore from the Homestake Mine. Two small masses of native gold (Au) are visible near the bottom right. The Homestake Mine was a deep underground gold mine (8,000 feet or 2,438 m) located in Lead, South Dakota.
South Dakota has extensive mineral resources in the Black Hills and some oil and gas extraction in the Williston Basin. The Homestake Mine , active until 2002, was a major gold mine that reached up to 8000 feet underground and is now used for dark matter and neutrino research.
The Fairburn Agate is a type of gemstone found in the agate beds of Southwestern South Dakota and Northwestern Nebraska. It is also the state gemstone of South Dakota. [1] Fairburns are characterized from other types of agate by their colors and the shape of the bands. [1] [2]
Location of the state of South Dakota in the United States of America. ... Mineral: Rose quartz: 1966 [3] Gemstone: Fairburn agate: 1966 [3] Soil: Houdek loam: 1990 ...
Single crystals of 14.3 m (47 ft) in size are reported from the Black Hills of South Dakota, United States. [6] [7] The naturally-occurring low-temperature form α-spodumene is in the monoclinic system, and the high-temperature β-spodumene crystallizes in the tetragonal system. α-spodumene converts to β-spodumene at temperatures above 900 ...
Galena is the official state mineral of the U.S. states of Kansas, [15] Missouri, [16] and Wisconsin; [17] the former mining communities of Galena, Kansas, [18] [19] Galena, Illinois, [20] Galena, South Dakota and Galena, Alaska, [21] take their names from deposits of this mineral.
Arkansas: still no state fossil in Arkansas, though the state designated Arkansaurus as its state dinosaur. [1] District of Columbia: Capitalsaurus is the state dinosaur of Washington D.C., but the District has not chosen a state fossil. Florida: There is no state fossil in Florida, though agatised coral, which is a fossil, is the state stone ...