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pumice    音标拼音: [p'ʌməs]
n. 轻石,浮石
vt. 用浮石磨光

轻石,浮石用浮石磨光

pumice
n 1: a light glass formed on the surface of some lavas; used as
an abrasive [synonym: {pumice}, {pumice stone}]
v 1: rub with pumice, in order to clean or to smoothen


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  • Pumice - Wikipedia
    Scoria differs from pumice in being typically denser With larger vesicles and thicker vesicle walls, scoria often sinks but not always Some scoria especially if it is unusually vesicular or has thinner walls can float for brief periods The difference is the result of the lower viscosity of the magma that forms scoria [citation needed] Reticulite is a type of highly vesicular scoria that
  • Pumice: Formation, Properties, Uses, and Why It’s So Lightweight
    Pumice is a lightweight volcanic rock formed by gas-rich eruptions Explore its formation, physical and chemical properties, and real-world uses
  • Pumice | Volcanic Glass, Uses, Formation, Properties | Britannica
    Pumice, a very porous, frothlike volcanic glass that has long been used as an abrasive in cleaning, polishing, and scouring compounds It is also employed as a lightweight aggregate in precast masonry units, poured concrete, insulation and acoustic tile, and plaster Pumice is pyroclastic igneous
  • Pumice: Igneous Rock - Pictures, Definition More
    Pumice is an extrusive igneous rock with a vesicular texture and very low specific gravity It is used to make lightweight concrete, abrasive products and more
  • Pumice: A Frothy, Light-Colored Volcanic Rock with Many Uses
    Pumice is a textural term for low-density, highly vesiculated, or frothy volcanic rock with a mostly felsic or sometimes intermediate composition
  • Pumice: The Lightweight Rock of Fire and Air - Rockhounding Wiki
    Pumice: The Lightweight Rock of Fire and Air Discover the unique properties and diverse uses of pumice, the lightweight volcanic rock Learn about its formation, types, applications in construction, horticulture, personal care, and its metaphysical significance in this comprehensive guide
  • Pumice: Identification, Pictures, Info for Rockhounds
    Pumice can be readily identified by its unique ability to float on water While pumice is a clearly defined rock type, it comes in many shapes and sizes and can sometimes be hard to distinguish from closely related rocks like scoria I’ll walk you through how to identify pumice, what it looks like, and where it can be found
  • Mineral resource of the month: Pumice and pumicite
    Pumice is an extrusive igneous volcanic rock formed through the rapid cooling of air-pocketed lava, which results in a low-density, high-porosity rock Fine-grained pumice, or pumicite, is defined as minute grains, flakes, threads or shards of volcanic glass, with a size finer than 4 millimeters
  • Ultimate Guide to Pumice (The Floating Rock!)
    Pumice is one of the stranger stones out there Less dense than water, with a wide variety of both industrial and personal uses, it’s actually the result of violent volcanic eruptions Pumice itself has been used for thousands of years, and is still found in many products to this day But what is it? And how is it formed? Let’s scrape the depths and take a closer look at this offbeat stone
  • What Is Pumice Used For? - Sciencing
    Pumice is a naturally-occurring rock that has many practical applications It can be obtained in large chunks or thin powders While most of the world's supply of pumice is used in construction materials, it is also widely used as an abrasive in cleaning supplies both for personal use and for use around the home





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