What property is diagnostic for phyllite? Select one: a. exceptionally clean slaty cleavage b. visible crystals c. satiny sheen d. fizzes during acid test

c. satiny sheen

Explanation:

The growth and formation property of the phyllite is a low-grade metamorphic condition and is created form the slate and a very fine-grained mica that achieves its preferred orientation. And It is primarily composed of the quartz, the sericite the mica, and the chlorite. This seen as a satiny sheen and represents a gradation from the slate to the schist.