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The white line left behind when dragging calcite across an unglazed porcelain plate relates to the mineral's hardness and its ability to leave a streak. This characteristic is often used in mineral identification, where the streak color can help distinguish between different minerals. Calcite has a hardness of 3 on the Mohs scale, allowing it to produce a visible streak on the porcelain surface.

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1d ago

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When you drag a piece of calcite across an unglazed porcelain plat it leaves behing a white line?

The white line left behind when dragging calcite across unglazed porcelain is due to the abrasion of the softer calcite mineral against the harder porcelain surface. The powdery residue created is caused by the calcite being scratched off and deposited on the porcelain as a result of the friction between the two materials.


What color is porcelain dishes?

Different minerals produce different colour powders (know as the mineral's 'streak') when scratched. For instance, hematite has a red streak, calcite has a white streak and graphite has a black streak. There is also variation within some minerals, depending on impurities. It should be noted that some minerals are too hard to be scratched by porcelain, and will instead powder the porcelain, producing a misleading white streak.


Is calcite metallic or nonmetallic?

Calcite is a compound and therefore cannot be classified as a metal or nonmetal.


What is the mineral in limestone?

Calcite: a common mineral consisting of crystallized calcium carbonate.


What is a steak of a calcite?

A steak of calcite is a large, thick piece or slab of calcite mineral that has been cut or broken from a larger specimen. It typically displays the characteristic cleavage and crystal structure of calcite, which often appears as transparent or translucent in color. These pieces are often used for display or educational purposes in earth science collections.


Does marble contain calcite?

Yes, marble is primarily composed of calcite. Calcite is a type of mineral that makes up the majority of the composition of marble. It gives marble its characteristic white color and distinctive veining patterns.


What type of rocks make chalk boards?

The most common material that chalkboards are made out of is porcelain enamel. More information about chalkboards can be found at http://www.answers.com/topic/chalkboard


What mineral has crystals that are shaped like a rhombus?

The mineral that commonly forms crystals shaped like a rhombus is calcite. Calcite crystals can exhibit a range of forms, but their rhombohedral cleavage is a distinctive characteristic. This means that when calcite breaks, it tends to create rhombus-shaped fragments. The unique crystal structure and cleavage make calcite an important mineral in geology and various industrial applications.


How many planes does calcite have?

Calcite commonly exhibits three notable cleavage planes, which are oriented at approximately 75-degree angles to one another. This characteristic cleavage is a key feature that helps in identifying calcite among other minerals. Additionally, calcite can exhibit a rhombohedral crystal habit due to the arrangement of its atoms. Overall, its cleavage and crystal structure contribute to its unique optical properties.


Are marble transparent?

No, marble is not transparent. It is a metamorphic rock composed primarily of minerals like calcite or dolomite, which give it a characteristic opaque appearance.


If Calcite will scratch gypsum This is an example of what physical characteristics?

This is an example of hardness, which is a physical characteristic that describes the resistance of a mineral to being scratched. Hardness is determined by the ability of one mineral to scratch another.


Mineral made up of a calcium compound and found in marble?

The mineral made up of a calcium compound and commonly found in marble is called calcite. Calcite is a carbonate mineral composed of calcium carbonate (CaCO3) and is often the main component of marble, providing its characteristic white color.