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Pumice is not a specific mineral. It is a highly vesicular volcanic glass, originating as one of the common acid volcanic rocks and containing dissolved CO2 or H2O, at high temperatures. Upon the pressure release in a volcanic explosion, the dissolved gases expand greatly to create the familiar low density light coloured material. Commonly 90% of the material is bubbles or their frozen remains.

Scoria is a similar material, but is darker and much heavier, reflecting the source rock and conditions from which it originated.

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12y ago

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Is pumice a element or compound?

Pumice is neither an element nor a compound. It is a type of volcanic rock that is made up of various minerals and volcanic glass.


What are the minerals in Pumice?

There are no minerals in pumice, just glass, but there is a high level of silica.


What are the names of the minerals that make pumice?

Pumice is primarily composed of the minerals feldspar and quartz, along with small amounts of other minerals such as hornblende, augite, and magnetite. The high silica content of these minerals contributes to the characteristic light and porous nature of pumice.


What minerals does the rock pumice have?

There usually are no minerals in pumice. it is composed of glass.


What color is pumice when smashed?

Pumice, being a rock composed of possibly a number of various minerals, does not have a streak color as such. Powdered pumice would reflect a combination of the streaks of the constituent minerals.


What is inside pumice?

Pumice is a volcanic rock that is light in weight due to its high porosity and low density. It is composed of highly vesicular glassy material with trapped air bubbles, formed during volcanic eruptions. Pumice may also contain crystals of various minerals such as feldspar, quartz, and biotite.


Which are not minerals?

Water and air are not minerals; granite, porphyry, clay, pumice are rocks, not minerals.


Is pumice natural or manmade?

Pumice is a naturally occurring volcanic rock.


Is a pumice rock a rock or a mineral?

A pumice rock is considered a rock because it is composed of multiple minerals, mainly feldspar and quartz. Minerals are the building blocks of rocks, so pumice is classified as a rock rather than a single mineral.


What makes a pumice unique?

Pumice is unique because it is made of different minerals. This rock is the only rock that is made with more than five minerals. Believe it or not, it has fourteen minerals!Some of the most important and most common minerals are water, weather, high pressure, and natural earth. Pumice is formed just like all other rocks; long periods of time and drying. The only thing that is unique about this rock and how it forms is that when we have earth quakes, wherever any pumice is drying or forming, the earths great shake can stop the gooey liquid from drying and cause it too deform!!!


Where can you find pictures of pumice?

The best way to find pictures of pumice is to do a Google search for volcanic minerals.


Does grains have minerals?

No. It is vesicular glass, like pumice.