It is white in color, fine to medium-grained, and does not contain mafic minerals. The first and most abundant unit is leucocratic granite. All three are easily identifiable in the field bases on their megascopic characteristics.
They may all be related to the same magma or be of different ages or a combination of the two. THE GEOLOGY OF DEPOSIT - The granitics are subdivided into three units. The other five percent is divided evenly between Precambrian chlorite schist and mid-Tertiary andesite dikes. Ninety-five percent of the mapped area is encompassed by granitic rocks. The age of the intrusive rocks is probably Cretaceous, but they could be Precambrian or mid-Tertiary for the purposes of this report they will be considered Cretaceous. The geology of the Stardust claims is dominated by three types or phases of granitic rocks.
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