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Black Indochinite Tektite Stone 0.1 to 1 Gram Very Small Size Pieces 40 Gram Lot For Sale
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Black Indochinite Tektite Stone 0.1 to 1 Gram Very Small Size Pieces 40 Gram Lot:
$18.00
Your best online business partner Black Indochinite Tektite Stone 0.1 to 1 Gram Very Small Size Pieces 40 Gram Lot
Indo-China BlackIndochinite Tektite Stone Weight: 40 gram(0.09pound = 1.4ounce)- very small size pieces lot - (about 50to 100pieces in each lot) Each piece from 0.1to 1gram
Size: Each from 3x7x13mm to 2.5x14x19mm
Location: Discovered at Maoming, Guangdong Province, China The pictures in the listing are just for reference as we are selling multiple pieces with same known as an solidified rock, which were fired into the Earth's upper atmosphere by a meteorite impact and subsequently cooled to form the distinctive glass-like structure. Indochinite Tektites are distinctly dark black in contrast to the green of EuropeanMoldaviteTektites. It is estimated that these bodies of solidifiedmagmaare 700,000 years old. Indochinite tektites, as the name suggests, are found in theIndochinese peninsula, from Australia and the Pacific islands ofMicronesiain the east and south, to China and Indonesia in the north and west. The largest indochinite was a Muong-Nong type tektite (which are layered tektites), which had a mass of 29.0 kg. Tektitesaregravel-size bodies that are composed of black, green, brown or gray, natural glass that are formed from terrestrial debris ejected during extraterrestrial impacts. They are characterized by 1. a fairly homogeneous composition; 2. an extremely low content of water and othervolatiles; 3. an abundantlechatelierite; 4. a general lack of microscopic crystals known as microlites and chemical relation to the localbedrockor localsediments; and 5. their distribution within geographically extensivestrewnfields. Tektites generally range in size from centimeters to millimeters. Millimeters-size tektites are known as microtektites. Although tektites are superficially similar to some terrestrialvolcanicglasses (obsidians), they have unusual distinctive physical characteristics that distinguish them from such glasses. First, they are completely glassy and lack any microlites orphenocrystsunlike terrestrial volcanic glasses. Second, although high insilica(>65 wt%), the bulk chemical and isotopic composition of tektites is closer to those ofshalesand similarsedimentary rocksand quite different from the bulk chemical and isotopic composition of terrestrial volcanic glasses. Third, tektites contain virtually no water (<0.02 wt%) unlike terrestrial volcanic glasses. Fourth, the flow-banding within tektites often contains particles and bands of lechatelierite, which are not found in terrestrial volcanic glasses. Finally, a few tektites contain partly melted inclusions ofshockedand unshocked mineral grains, i.e.quartz,apatite, andzircon, as well ascoesite. The difference in water content can be used to distinguish tektites from terrestrial volcanic glasses. When heated to their melting point, terrestrial volcanic glasses will turn into a foamy glass because of their content of water and other volatiles. Unlike terrestrial volcanic glass, a tektite will produce only a few bubbles at most when heated to its melting point because of its much lower water and other volatiles content. Item SpecificsCountry/Region of Manufacture :ChinaCalifornia Prop 65 Warning :NAModified Item :NoModification Description :NA
Payment Payment: By Paypal Shipping cost Free shipping cost. We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery. We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery. Return policy Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost. Messages We will answer messages in 24 hours during working days. [ Policy: This is the contents of your policies.You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]
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