Rhyolite sentence example
It crosses a section that is mostly desert, but is connected with the Bullfrog District by the Las Vegas & Tonopah, which runs from Goldfield through Beatty and Rhyolite, and meets the San Pedro, Los Angeles & Salt Lake at Las Vegas.
The volcanic series include the rhyolite of Nell Island, some obsidian, and the sheets of basalts which form the Cloudy Mountains, Mount Dayman and Mount Trafalgar (an active volcano), and also cover wide areas to the south and west of the Owen Stanley Range.
The Nahuatl lapidaries had at hand many varieties of workable and beautiful stone - onyx, marble, limestone, quartz and quartz crystal, granite, syenite, basalt, trachyte, rhyolite, diorite and obsidian, the best of material prepared for them by nature; while the Mayas had only limestone, and hard, tenacious rock with which to work it, and timber for burning lime.
Kachess rhyolite 02000
Augite-andesite predominates, but basalt and rhyolite also occur.Advertisement
In the south of the island there are sills and dykes of felsite, quartz-porphyry, rhyolite, trachyte and pitchstone.
Quartz occurs as a primary and essential constituent of igneous rocks of acidic composition such as granite, quartz-porphyry and rhyolite, being embedded in these either as irregularly shaped masses or as porphyritic crystals.
The bead on the far left is a mixture of colors and is made from a stone called leopardskin rhyolite.
The principal quarries are in Dodge, Green Lake (a blackish granite is quarried at Utley and a pinkish rhyolite at Berlin), Marathon, Marinette, Marquette, Sauk, Waupaca and Waushara counties.
The new interpretation is that two north-easterly trending chains of rhyolite domes are present, distributed over a length of 3 km.Advertisement
Additionally it has been a producer of tin ores mainly associated with rhyolite dikes, one such mine Wheal Jane only closed in 1990.
More frequent eruptions of basalt and rhyolite lava flows have occurred before and after the large caldera-forming events.
The rhyolite dikes in the mine often have chilled margins and the occasional xenolith of granite indicates the near proximity of granite at depth.