Graphite is identified in a particular schist. Which one of the following conclusions is justified? Graphite is identified in a particular schist. Which one of the following conclusions is justified? The schist formed from a quartz-rich, sedimentary limestone. The rock also contains diamonds; both are crystalline forms of the element carbon. The graphite lubricated shearing movements along a fault, causing a schist to form. The pre-metamorphic rock was a shale or mudstone containing organic matter.

The pre-metamorphic rock was a shale or mudstone containing organic matter

Explanation:

Graphite schist is a rock that is formed during the metamorphism of coal. This metamorphism can be either higher level or an intermediate level of metamorphism.

The various attributes of a Graphite schist are:

a. It has a metallic shine

b. It has a very soft texture

c. It stains paper easily.

Graphite schist contains graphite in a very high proportion.

the correct answer would be true friction causes the faults to slip or collide

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