ACLIVIty 4.2 What Are Rocks Made Of? Date: Name What are some visible difference

Question

ACLIVIty 4.2 What Are Rocks Made Of? Date: Name What are some visible differences between intergrown mineral grains and detrital or clatic mineral grains? CUSS Rocks are made of the materials listed bekow and descritbed within the chapter. Under each the name of every kind of material it contains from the list. Be prepared to compare your B REFLECT & DISCuss are sample in Fig. A42.1, write olnervations with the observations of others in your class ergrown Crystals Clasts (detrital minerals) Gravel Silt & Clay Fossils (bioclasts) Clasts (rock fragments) Sand Glass 6 Figure A4.2.1 118

Explanation / Answer

A.

The growing of one mineral with or into another minerals.

The crystals are growing together from two or more minerals.

Detrital grains are mainly transported.

Detrital grains are sand-size minerals such as feldspar and quartz.

B.

Intergrown mineral grain Detrital or clastic mineral grain

The growing of one mineral with or into another minerals.

The crystals are growing together from two or more minerals.

Detrital grains are mainly transported.

Detrital grains are sand-size minerals such as feldspar and quartz.

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