 | Visit my website at www.junglejoel.com - x-ray diffraction shows the Martian soil tested so far is high in plagioclase feldspar, olivine, and pyroxene -similar to the volcanic soils around Mauna Kea in Hawaii. The semi-precious stone "peridot," found in jewelry stores, is a form of olivine. Please rate and comment, thanks! Video Credits NASA JPL CalTech | Views: 5  0 ratings |
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