Quartz is the most common of all minerals on the face of the earth. Some refer to as the second most common next to feldspar. There are many different varieties of quartz.
Granite consists mainly of the minerals, quartz, feldspar, and hornBlende. It is the most common type of ignious rock. Granite is a very hard and tough rock, which is used for a variety of construction uses.
Sandstone is made up of mainly quartz and feldspar. Sandstone can be a variety of colors, but the most common are tan, pink, brown, yellow, red, gray, black, and white. Sandstone has a very rigid and rough texture.
Mica occurs in ignious, metamorphic, and sedimentary rocks. It is a very thin rock, that is smooth and very tender. Mica is usually a darker color (black).
The new Cruz Plaza just went under construction about a month ago. In regards to safety, the perimeter is surrounded by erosion blocks. Other things that are in consideration are the water lines that travel under the consruction site. Recently since we've had our water shut off for alomost 4 to 5 hours regarding the construction.
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