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Chlorophane, also sometimes known as pyroemerald, cobra stone, and pyrosmaragd, is a rare variety of the mineral fluorite with the unusual combined properties of thermoluminescence, thermophosphoresence, triboluminescence, and fluorescence: it will emit light in the visible spectrum when exposed to ultraviolet light, when heated, and when ...
68-15116 AH-1, Helicopter, Attack, Cobra - Stone Museum - Monroe Township, NJ 68-15138 AH-1, Helicopter, Attack, Cobra - American Helicopter Museum & Education Center - West Chester, PA 68-15146 AH-1, Helicopter, Attack, Cobra - American Airpower Heritage Museum - Midland, TX
The Lueders Formation would have been located in the northern tropics or subtropics. Climatically, after the retreat of an early Artinskian glacial maximum , the deserts of the North American craton experienced fluctuation and growth during this time period, and the associated aridity decrease impacted seabed deposition in localities across the ...
Lueders is a city in Jones and Shackelford counties in the U.S. state of Texas. The population was 258 at the 2020 census . [ 4 ] The portion of Lueders located in Jones County is part of the Abilene, Texas metropolitan area .
English: Cobra-stone is also known as snake gem, cobra pearl or Nagamani, not the snake stone. The term "cobra stone" is often used for a type of fluorite called chlorophane. Its connection to snakes is purely mythological; it is a mineral.
The limestones and dolomites of this area are extensively quarried in Pennsylvania. These carbonate rocks are used for variety of purposes including, crushed stone, cement manufacturing, fertilizers, and coal-mine dust (reduces acid mine drainage) [12] Karst features are problematic in the Great Valley.
Pennsylvania Route 897 (PA 897) is a 41.7-mile-long (67.1 km) north–south route in eastern Pennsylvania, United States.The southern terminus is at an intersection with U.S. Route 30 (US 30) in Gap.
Southern terminus of PA 29: Wilkes-Barre Township: 164.70: 265.06: 45: 165: PA 309 south / PA 309 Bus. north – Wilkes-Barre, Mountain Top: Southern end of PA 309 concurrency; signed as exits 165A (south) and 165B (north) northbound; southern terminus of PA 309 Bus. 167.90: 270.21: 46: 168: Highland Park Boulevard – Wilkes-Barre: Serves ...