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What is the classification of metamorphic rocks based on?

As with igneous and sedimentary rocks, metamorphic rocks are classified on the basis of texture (grain size, shape, orientation) and mineral composition. However, the classifiction of metamorphic rocks is more difficult to get into than with igneous and sedimentary rocks, for a couple of reasons.

What are the classification of rocks?

The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among them have to do with how they are formed. Sedimentary rocks are formed from particles of sand, shells, pebbles, and other fragments of material.

What type of rock is C?

C. S Clastic rock – composed of fragments, or clasts, of pre-existing rock. S Concretion – a concretion is a rock in which a mineral cement fills the spaces between the sediment grains.

What kind of rock is this App?

Best Rock and Mineral Identification App for 2021

  1. Smart Geology- Mineral Guide. The Smart Geology- Mineral Guide is going to be your best option when it comes to looking for high quality, free rockhounding apps.
  2. Minerals guide: Rocks, Crystals & Gemstones. According to the official app description:
  3. Geology Rocks – Handbook of Rocks.
  4. Geology Toolkit Premium.

How do you identify basalt?

Basalt appears black or grayish-black, sometimes with a greenish or reddish crust. Feel its texture. Basalt consists of a fine and even-grain. The dense rock has no crystals or minerals discernible to the naked eye.

What is the Colour of basalt?

Basalt is the volcanic equivalent of gabbro. Group – volcanic. Colour – dark grey to black.

What does basalt mean?

: a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite.

Is copper found with gold?

Copper is found alongside many other types of ore. It can be found near gold, silver, zinc, lead, and other types of metal deposits. Until the development of the modern copper mining process, it was typically a byproduct of mining for other metals.

What rock is copper found in?

sedimentary rocks

Which metal occurs in native state?

Only two metals, gold and platinum, are found principally in their native state, and in both cases the native metals are the primary ore minerals. Silver, copper, iron, osmium, and several other metals also occur in the native state, and a few occurrences are large enough—and sufficiently rich—to be ore deposits.

Which metal exist in native state in nature?

Only gold, silver, copper and the platinum group occur native in large amounts. Over geological time scales, very few metals can resist natural weathering processes like oxidation, so mainly the less reactive metals such as gold and platinum are found as native metals.