reÂ·ticÂ·uÂ·late. adj. 1. Resembling or forming a net or network: reticulate veins of a leaf. 2. Relating to or being an evolutionary process that involves the exchange of genes between organisms of different species, as in the formation of a new species through hybridization.
Egypt is rich in building and decorative stone, copper and lead ores, gold, and semiprecious stones. These natural resources allowed the ancient Egyptians to build monuments, sculpt statues, make tools, and fashion jewelry. Embalmers used salts from the Wadi Natrun for mummification, which also provided the gypsum needed to make plaster.
Determining the hardness of a mineral is one of the most important tests used in mineral identification. Most rocks are aggregates of minerals. This rock, a granite pegmatite, is a mixture of mineral grains. It contains pink orthoclase, milky quartz, black hornblende and black biotite.ntacid tablets are made from the mineral calcite. It takes many minerals to make something as simple as a wooden pencil. The lead is made from graphite and clay minerals; the brass band is made of copper and zinc, and the paint that colors it contains pigments and fillers made from a variety of minerals.