Black Indochinite Tektite Stone 50 to 100 gram size Large Pieces 10 Pieces Lot
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Black Indochinite Tektite Stone 50 to 100 gram size Large Pieces 10 Pieces Lot:
$69.99
Nature & Science
Black Indochinite Tektite Stone 50 to 100 gram size Large Pieces 10 Pieces LotIndo-China Black Indochinite Tektite Stone
10 Pieces Lot (each piece from 50 to 100 gram)
Weight: no less than 750 gram in total weight for one lot
Size: 30x35x39 mm to 35x45x50 mm
Location: Discovered at Maoming, Guangdong Province, China
The pictures in the listing are just for reference as we are selling multiple pieces with same cost:
Free shipping cost.
We send the goods to USA buyers by E-express, a kind of postal express service set up by 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.
We send the goods to other countries by registered airmail through Hong Kong Post. It usually takes about 12 to 18 working days for delivery, and it may take a bit longer to Central and South America.
***
This tektite is known as an 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 ChinaOrigin ChinaType Meteorites & TektitesItem Type Meteorites & TektitesType of Mineral Black TektiteSpecimen Type Display SpecimensUPC Does Not Apply
Payment by Paypal
Payment: By Paypal
Free shipping costGoods 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 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 refundFull refund for returns in 30 days.
Answer message in 24 hoursWe will answer buyer messages within 24 hours.
Policy 5We ship our goods worldwide.
Nature & Science
Indo-China Black Indochinite Tektite Stone
10 Pieces Lot (each piece from 50 to 100 gram)
Weight: no less than 750 gram in total weight for one lot
Size: 30x35x39 mm to 35x45x50 mm
Location: Discovered at Maoming, Guangdong Province, China
The pictures in the listing are just for reference as we are selling multiple pieces with same cost:
Free shipping cost.
We send the goods to USA buyers by E-express, a kind of postal express service set up by 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.
We send the goods to other countries by registered airmail through Hong Kong Post. It usually takes about 12 to 18 working days for delivery, and it may take a bit longer to Central and South America.
***
This tektite is known as an 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 ChinaOrigin ChinaType Meteorites & TektitesItem Type Meteorites & TektitesType of Mineral Black TektiteSpecimen Type Display SpecimensUPC 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 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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Black Indochinite Tektite Stone 50 to 100 gram size Large Pieces 10 Pieces Lot:
$69.99