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What mineral makes up opal?

Updated: 8/30/2023

Wiki User

∙ 10y ago

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Opals are actually not minerals, but are classed as mineraloids. This is because they lack a crystalline structure, yet are mineral in nature.

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∙ 12y ago

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what minerals make up opal

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Continue Learning about Movies & Television

What gem is not a mineral?

Opal and amber are not minerals.

Is a man-made crystal a mineral?

The majority of minerals are crystalline materials.Examples: opal, halite, topaz.

What is the color of the mark a mineral makes?

blue

What mineral has a hardness level of 7 has a white streak color and is redbrick?

Opal has the chemical formula of SiO2 * n H2O. It has a hardness of 7.0 and has a natural red brick appearance.

What rock or mineral makes a sink?

usually marble

Related questions

Is Fire Opal a rock or a mineral?

Neither. Opal is a mineraloid, as it does not have a sufficiently organized structure to be considered a mineral.

What is outback mineral?

Opal

What chemical is opal made from?

Opal ia a hydrated silica mineral.

Why is the mineral opal referred to as a mineraloid?

Opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. A mineraloid is a mineral-like substance that does not demonstrate crystallinity.Now you get it?

What is the Texture of an Opal Mineral?

smooth

Type of Mineral start with o end with l?

Opal is a mineral.

What type of mineral makes up limestone?

The mineral quartz makes up limestone.

What minerals is 99 percent of the Earth's crust made of?

SiO2 makes up around 50% of the crust in the form of many types of minerals like jasper, flint, chalcedony, opal, quartz.... There is no one mineral that makes up 99% of the earths crust

What gem is not a mineral?

Opal and amber are not minerals.

What is a mineral gem?

Opal and amber are not minerals.

What is the fracture of opal?

The fracture of an opal can be hard or smooth , An opal can have as many fractures as any other mineral can . Sometimes opal can be smooth , sometimes they can be hard . The fracture of an opal is hard and smooth .

What valuable mineral starts with O?

Opal, (although it's not a true mineral).

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