Some rocks are very hard. What is the hardest rock? A. diamond B. quartz C. obsidian D. gneiss 相关知识点: 试题来源: 解析 A。解析:diamond(钻石)是最硬的岩石。quartz(石英)、obsidian(黑曜石)、gneiss(片麻岩)都没有钻石硬。本题考查词汇比较。
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Is gold igneous, metamorphic, or sedimentary? Is feldspar an igneous rock? Is shale an igneous rock? Is basalt an igneous rock? Is sandstone a igneous rock? Is amethyst a igneous rock? Is granite an igneous rock? Is quartz an igneous rock?
The most common mineral found in sedimentary rocks is: A. Quartz B. Feldspar C. Mica D. Gypsum 相关知识点: 试题来源: 解析 A。在沉积岩中,最常见的矿物是石英(Quartz)。长石(Feldspar)、云母(Mica)在火成岩中较常见,石膏(Gypsum)相对较少见。
Are diamonds rocks or minerals? Is quartz a sedimentary rock? Is feldspar an igneous rock? How old is petrified wood from Indonesia? Is slate a sedimentary rock? Is phyllite a metamorphic rock? Is quartz a metamorphic rock? Is diamond a metamorphic rock?
VisitTheUSA.com says, "Hiking in the fall demands a visit to the top of Stratton Mountain. A fire tower at the summit is open to the public, providing a gorgeous panorama of red, yellow, and orange New England foliage." There are lodges, inns, restaurants and taverns along the trail ...
There are various minerals or rocks that can mimic jade and may have concentrated dye between their grains, which becomes visible when magnified. Hardness 6 - 7 on the Mohs scale, making it resistant to scratching from both knives and glass. Imitations of jade made from plastic or serpentinite...
One of the big differences is that nearly every model of the Louis line has a hand-wound movement, with the small exception of the small and large sizes at the entry-level, which have quartz movements. Tank Louis in rose gold and genuine alligator skin straps. [Image Credit: (L)Cartier...
Quartz Topaz Gifts That Rock Rhodochrosite Grape Agate Find Other Topics on Geology.com: Rocks: Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. Minerals: Information about ore minerals, gem materials and rock-forming minerals. Volcanoes: Articles about volcanoes, ...