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2017020720541854216


2017020720541854216

  • Indo-China Black Indochinite Tektite (powder to very small pieces)
  •  
  •  
  • Weight: 123.8 carat (24.76 gram = 0.05 pound = 0.87 ounce)
  • Size: powder to 1.5 carat pieces
  • Dimension: powder to 12x7x4 mm
  •  
  • Location: Discovered at Maoming, Guangdong Province, China
  •  
  •  
  •  
  • We have a lot more tektite items in our ebay store (http://stores.ebay.com/Gao-Fu-Collectibles), you may log in our store to view the details.
  •  
  • Shipping cost:
  • Free shipping cost.
  • Nature & Science

    Translucent Black Indochinite Tektite (Powder to very small pcs) 123.8 Carat Lot

    Indo-China Black Indochinite Tektite (powder to very small pieces)

     

     

    Weight: 123.8 carat (24.76 gram = 0.05 pound = 0.87 ounce)

    Size: powder to 1.5 carat pieces

    Dimension: powder to 12x7x4 mm

     

    Location: Discovered at Maoming, Guangdong Province, China

     

     

     

    We have a lot more tektite items in our ebay store (http://stores.ebay.com/Gao-Fu-Collectibles), you may log in our store to view the details.

     

    Shipping cost:

    Free shipping cost.

    We send the goods to USA, UK and Australia buyers by E-express, a kind of postal express service set up by Hong Kong Post. It usually takes about 8 to 12 working days for delivery.

    We send the goods to other countries by registered airmail through Hong Kong Post. It usually takes about 15 to 20 working days for delivery, and it may take a bit longer to Central and South America.

     

     

     

    ***

     

    This tektite is known as an "Indochinite".

    Indochinite Tektites are 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 European Moldavite Tektites. It is estimated that these bodies of solidified magma are 700,000 years old. Indochinite tektites, as the name suggests, are found in the Indochinese peninsula, from Australia and the Pacific islands of Micronesia in 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.

     

    Tektites are gravel-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 other volatiles; 3. an abundant lechatelierite; 4. a general lack of microscopic crystals known as microlites and chemical relation to the local bedrock or local sediments; and 5. their distribution within geographically extensive strewnfields. Tektites generally range in size from centimeters to millimeters. Millimeters-size tektites are known as microtektites.

    Although tektites are superficially similar to some terrestrial volcanic glasses (obsidians), they have unusual distinctive physical characteristics that distinguish them from such glasses. First, they are completely glassy and lack any microlites or phenocrysts unlike terrestrial volcanic glasses. Second, although high in silica (>65 wt%), the bulk chemical and isotopic composition of tektites is closer to those of shales and similar sedimentary rocks and 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 of shocked and unshocked mineral grains, i.e. quartz, apatite, and zircon, as well as coesite.

    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 ChinaCountry of Manufacture ChinaUPC Does not apply

    Payment by Paypal

    Payment: By Paypal

    Free shipping cost

    Goods will be sent by airmail through Post Office from Hong Kong and it may take 12 -18 working days to arrive, and it may take a bit longer to Central and South America.

    For items over US$5 in value, we will send the goods to USA buyers by E-express, a kind of postal express service set up by ebay with USPS and Hong Kong Post. It usually takes about 6 to 10 working days(depends on proximity to USPS international hubs) for delivery in USA.

     

    Returns in 30 days full refund

    Full refund for returns in 30 days.

    Answer message in 24 hours

    We will answer buyer messages within 24 hours.

    Policy 5

    We ship our goods worldwide.

    Nature & Science

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    Translucent Black Indochinite Tektite (Powder to very small pcs) 123.8 Carat Lot

    Indo-China Black Indochinite Tektite (powder to very small pieces)

     

     

    Weight: 123.8 carat (24.76 gram = 0.05 pound = 0.87 ounce)

    Size: powder to 1.5 carat pieces

    Dimension: powder to 12x7x4 mm

     

    Location: Discovered at Maoming, Guangdong Province, China

     

     

     

    We have a lot more tektite items in our ebay store (http://stores.ebay.com/Gao-Fu-Collectibles), you may log in our store to view the details.

     

    Shipping cost:

    Free shipping cost.

    We send the goods to USA, UK and Australia buyers by E-express, a kind of postal express service set up by Hong Kong Post. It usually takes about 8 to 12 working days for delivery.

    We send the goods to other countries by registered airmail through Hong Kong Post. It usually takes about 15 to 20 working days for delivery, and it may take a bit longer to Central and South America.

     

     

     

    ***

     

    This tektite is known as an "Indochinite".

    Indochinite Tektites are 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 European Moldavite Tektites. It is estimated that these bodies of solidified magma are 700,000 years old. Indochinite tektites, as the name suggests, are found in the Indochinese peninsula, from Australia and the Pacific islands of Micronesia in 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.

     

    Tektites are gravel-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 other volatiles; 3. an abundant lechatelierite; 4. a general lack of microscopic crystals known as microlites and chemical relation to the local bedrock or local sediments; and 5. their distribution within geographically extensive strewnfields. Tektites generally range in size from centimeters to millimeters. Millimeters-size tektites are known as microtektites.

    Although tektites are superficially similar to some terrestrial volcanic glasses (obsidians), they have unusual distinctive physical characteristics that distinguish them from such glasses. First, they are completely glassy and lack any microlites or phenocrysts unlike terrestrial volcanic glasses. Second, although high in silica (>65 wt%), the bulk chemical and isotopic composition of tektites is closer to those of shales and similar sedimentary rocks and 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 of shocked and unshocked mineral grains, i.e. quartz, apatite, and zircon, as well as coesite.

    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 ChinaCountry of Manufacture ChinaUPC Does not apply

    Payment: By Paypal

    Goods will be sent by airmail through Post Office from Hong Kong and it may take 12 -18 working days to arrive, and it may take a bit longer to Central and South America.

    For items over US$5 in value, we will send the goods to USA buyers by E-express, a kind of postal express service set up by ebay with USPS and Hong Kong Post. It usually takes about 6 to 10 working days(depends on proximity to USPS international hubs) for delivery in USA.

     

    Full refund for returns in 30 days.

    We will answer buyer messages within 24 hours.

    We ship our goods worldwide.

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