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  • .Faceted quartz crystals. Close-up of quartz or silicon dioxide (SiO2), one of the commonest minerals in the Earth's crust (12% by volume). The pure, colorless variety is also known as rock crystal and is used as a gemstone and highly prized by collectors. When it contains impurities, these impart a range of colors including white, yellow, pink, blue, green and smoky brown..
    K10quartz3623.JPG
  • An X-ray of two Pearl Strands.  The fake pearl strand is made from plastic and x-rays can easily pass through, while the real pearls are much denser to the x-rays and are shown at the bottom of the picture.  Real Pearls are accretions of nacre (calcium carbonate) secreted by certain oysters and mussels. The presence of a foreign body (such as a parasite or a grain of sand) within the shell triggers the secretion of nacre by the mollusk?s mantle. Thin layers are deposited on the irritant particle and, over several years, a pearl is formed.
    real-fake-pearlblue.jpg
  • Hornblende crystals, polarized light micrograph. This mineral contains calcium, sodium, magnesium, iron and aluminum in a silicate matrix. It is a member of the amphibole group of minerals, and it is found in igneous and metamorphic rocks. The area here is less than half a centimeter wide.
    K17-Hornblende01.jpg
  • Agate is a micro crystalline variety of silica, chiefly chalcedony, characterized by its fineness of grain and brightness of color. This particular agate came from the shores of Lake Superior in Michigan. Specimen Dimension: approximately 4 cm.
    K12-Sup-agate4210.jpg
  • .Faceted quartz crystals. Close-up of quartz or silicon dioxide (SiO2), one of the commonest minerals in the Earth's crust (12% by volume). The pure, colorless variety is also known as rock crystal and is used as a gemstone and highly prized by collectors. When it contains impurities, these impart a range of colors including white, yellow, pink, blue, green and smoky brown..
    K10quartz3624.JPG
  • Agate is a micro crystalline variety of silica, chiefly chalcedony, characterized by its fineness of grain and brightness of color. This particular agate came from the shores of Lake Superior in Michigan. Specimen Dimension: approximately 4 cm.
    K12-Sup-agate4232.jpg
  • An X-Ray of imitation pearls.  These pearls are made from plastic and coated to look and feel like real pearls.  The X-ray shows that the pearls are made from plastic.  Shell absorbes much more x-rays than plastic.
    fake-pearls.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The width of this image is 400 um. This micrometeorite was ground in half and polished. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earth’s atmosphere. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM180628MM0014A.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is 1 mm. This micrometeorite was ground in half and polished. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earth’s atmosphere. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM180628MM0012A.jpg
  • A Scanning electron microscope (SEM) image of a micrometeorite. The diameter of this meteorite is 900 um. This micrometeorite was ground in half and polished. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earth’s atmosphere. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM180628MM0010A.jpg
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Ted Kinsman

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