Gold values have been reported in quartz stringers (veins) in basalt in northeaster New Mexico (e.g., Bueyeros, NM; Capulin volcanics). Source of gold may be epigenetically related to suspect younger acidic intrusives beneath the basalts.
Bill Mansker, Ph.D.
You can find gold nuggets because I found some and sold it for $2
They are valuable because they are rare and take a long time to process to create a good looking stone. They are classified as "gemstones".
aigrette
Given its remarkable hardness (second only to diamond on Moh's scale), any corundum is of course economically valuable for industrial grinding purposes just as long as it's not radioactive. However, corundum crystals of much greater value can be found as the gemstones ruby and sapphire. As gems these are most valuable when found as large, clear single crystals with appealing color characteristics and few "defects."
Rubies, sapphires and diamonds are valuable minerals because they are rare and the cut prices reflect it.
A carat is actually a standard unit of measure that defines the weight of a diamond. One carat is equivalent to 200 milligrams. Carat sizes are also expressed as “points”, with a one carat diamond equaling 100 points, a one-half carat diamond being 50 points, a three-quarter carat diamond being 75 points, and so on.
Jet, Onyx, some forms of Marble and Granite, & Obsidian.
ore
It is conceivable that a fossil could be found among sedimentary rock crystals, and some dead organisms have actually been replaced by minerals which are composed of crystals. Fossils in gems and crystals from metamorphic or igneous processes--no.
the gems he found out about are rubies and diamonds
usually by mining for them
Garnets
yes
Turquoise, garnet, peridot, chrysocolla, azurite, malachite, agate, chalcedony, amethyst, and topaz are some of the gems found in Arizona.
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topz,iron,ore,tin,gold,bauxite,nickel,granite,limestone,clay,sand,gems,timber.
no
fresh water pearls =)