Meteorite Way

Wednesday, July 2, 2008

STONY-IRON METEORITE - Pallasite (325 grams)

Description: STONY-IRON METEORITE - Pallasite(ME-599 BRAHIN, MINSK, BELORUSSIYA SSR, RUSSIA)

The Brahin pallasite was first discovered in 1810 near Minsk, Belorussia, Russia. Brahin pallasites are beautiful though not the most stable of the pallasites. They are however the most affordable. For the most stable, gem-like pallasites please visit our

Brahin Country : Belorussia
State/District : Gomel region
Coordinates : 52°30 'N, 30°20 'E Date of find : 1810
Type : Stony/iron PALPallasite, main group, fragmental olivine shape
Size : The Brahine measures 95 mm x 44 mm x 38 at its widest points. Thinnest point is 10 mm

Buy It Now : $7,000 USD.
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Saturday, April 26, 2008

Stony Iron Meteorite - Pallasite (for Sale)

click image to see more !

Slice finished on both sides 93 grams 5.2 mm x 78 mm x 85 mm

$1,860 USD.

Slice finished on both sides 96.8 grams 6.2 mm x 77 mm x 80 mm

$1,940 USD.

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Pallasite

A pallasite is a type of stony-iron meteorite. It consists of cm-sized olivine crystals of peridot quality in an iron-nickel matri. Coarser metal areas develop Widmanstätten patterns upon etching. Minor constituents are schreibersite, troilite and phosphates. Pallasites were once thought to originate at the core-mantle boundary of differentiated asteroids that were subsequently shattered through impacts. An alternative recent hypothesis is that they are impact-generated mixtures of core and mantle materials. They are named for the German naturalist Peter Pallas (1741-1811), who located in 1772 a specimen near Krasnojarsk in the mountains of Siberia that had a mass of 680 kg. The Krasnojarsk mass described by Pallas in 1776 was one of the examples used by E.F.F. Chladni in the 1790s to demonstrate the reality of meteorite falls on the Earth, which were at his time considered by most scientists as fairytales. This rock mass was dissimilar to all rocks or ores found in this area (and the large piece could not have been accidentally transported to the find site), but its content of native metal was similar to other finds known from completely different areas

Pallasite falls
Pallasites are a rare type of meteorites. Only 61 are known to date, including 10 from Antarctica, and only 4 are observed falls. These falls are in chronological order :

Mineo, Sicily, Italy. A luminous meteor was observed and an object seen to fall with a loud roar in May 1826. Only 46g are preserved in collections.

Zaisho, Japan. 330 g were found on February 1st, 1898, after appearance of a fireball.
Marjalahti, Karelia, Russia. After the appearance of a bright meteor and detonations, a large mass was seen to fall and 45 kg were recovered in June 1902. At this date the fall site belonged to Finland, and the main mass of Marjalahti is now at the Geological Museum of the University of Helsinki.

Omolon, Magadan Region, Russia. A reindeer-breeder observed the fall on May 16, 1981 and found the 250 kg meteorite two years later. The fall was confirmed by a meteorological station that had observed a fireball on the same date.

Pallasite finds

Although pallasites are a rare meteorite type, enough pallasite material is found in museums and meteorite collections and is available for research. This is due to large finds, some of which yielded more than a metric ton. The following are the largest finds :

Brenham, Kansas, USA. In 1890 the find of about 20 masses with a total weight of 1000 kg around the shallow Haviland Crater were reported. More masses were found later, including one of 1,000 pounds (454 kg) from a depth of 5 ft, the total amounting to about 4.3 t. A piece of 487 kg is in the Field Museum of Natural History, Chicago. In 2005, Steve Arnold of Arkansas, USA, and Phil Mani of Texas, USA, unearthed a large mass of 650 kg and in 2006 several new large masses

Huckitta, Northern Territory, Australia. A mass of 1400 kg was found in 1937, a transported piece of about 1 kg was already found in 1924 at Alice Springs.
Fukang, Xinjiang Province, China. A mass of 1003 kg was recovered in 2000.

Imilac, Atacama Desert, Chile; known since 1822. Numerous masses up to 200 kg were found, the total weight is about 920 kg.
Brahin, Gomel Region, Belarus, known since 1810. Many masses were found in a strewnfield, with a total weight of about 820 kg. An additional mass of 227 kg was found at a depth of 10 ft in 2002.

Esquel, Chubut, Argentina. A large mass of 755 kg was found embedded in soil before 1951.

Krasnojarsk, Yeniseisk, Russia. A mass of about 700 kg was detected in 1749 about 145 miles south of Krasnojarsk. It was seen by P.S. Pallas in 1772 and transported to Krasnojarsk (see above) The main mass of 515 kg is now in Moscow at the Academy of Sciences. Interestingly, a pallasite of 198 kg was found in 1990 near the town Pallasovka, which was named in honour of P.S. Pallas, who studied the geography of this area during his travels in the 18th century.

by Wikipedia

Thursday, February 28, 2008

MY STONY-IRON METEORITES - Pallasites (Big One)

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Friday, August 3, 2007

Meteorite References in the Bible

1. ...and the stars in the sky fell to earth, as late figs drop from a fig tree by a strong wind. (Revelation 6:13)

2. ...and a great star, blazing like a torch, fell from the sky... (Revelation 8:10)

3. From the sky huge hailstones of about a hundred pounds each fell upon men. (Revelation 16:21)

4. ...and something like a huge mountain, all ablaze, was thrown into the sea. (Revelation 8:8)

5. The fifth angel sounded his trumpet, and I saw a star that had fallen from the sky to the earth. (Revelation 9:1)

6. ...the stars will fall from the sky, and the heavenly bodies will be shaken. (Matthew 24:29)

7. ...the Lord hurled large hailstones down on them from the sky... (Joshua 10:11)

8. His tail swept a third of the stars out of the sky and flung them to earth. (Revelation 12:4)

9. Then a mighty angel picked up a boulder the size of a large millstone and threw it into the sea... (Revelation 18:21)

10. ...the stars will fall from the sky, and the heavenly bodies will be shaken. (Mark 13:25)

by : http://www.rocksfromheaven.com

Saturday, July 28, 2007

How old are tektites? & Where are they found?

How old are tektites?

Tektites are geologically young, with a range of about 300,000 years to 35 million years. Many Australites are 610,000 to 750,000 years old. The North American tektites have been dated at 34.5 million years, and the Libyan Desert glass at 28 million years. The Bohemian and Moravian sites are dated at 14.7 million years, Aouelloul Crater at 3 million years and Ivory Coast tektites at about 1 million years.

Where are they found?

Tektites have been found only in certain parts of the world, spread over large areas called strewn fields, mainly in low latitudes. The three major areas are south-east Asia (especially Thailand and the Philippines), Australasia; Caribbean-North America; and Ivory Coast, West Africa.
Other areas include the Czech Republic (Bohemia); Slovakia (Moravia); Aouelloul Crater, Mauritania, Africa; the Libyan Desert; Irgiz, C.I.S.; Dalat, South Vietnam; Laos; Kwantung province, China; and Malaysia.
Microtektites are tiny particles of tektite dust found in deep sea sediment in the Atlantic and Indian oceans. They have the same composition as tektites from the North American and Australasian strewn fields.
Over 600,000 tektites have been found in south-east Asia (heaviest 15 kg) and about 100,000 in Australasia (heaviest 0.4 kg). About 2,000 (heaviest 91 g) have been found in the Caribbean-North American strewn field; 55,000 (heaviest 0.5kg) from Bohemia and Moravia and 200 (heaviest 79 g) from the Ivory Coast, West Africa.
Australian tektites have been found right across southern Australia, mainly below 25 degrees latitude, particularly within an east-west belt extending over Northern Territory, Queensland, most of South Australia, Victoria, New South Wales, and Tasmania, and the southern parts of Western Australia.

Friday, July 27, 2007

Meteorite Way Information I

Tektites, in the simplest terms are pieces of natural glass. Several natural glass types are found on the Earth. By outward appearance some tektites resemble obsidian the commonest of the natural glasses. Microscopically, tektites resemble glass more than obsidian in that they are almost completely devoid of any mineral crystals in their composition. The tektite glass is homogeneous in nature with the elements it contains dissolved and mixed. Tektites have much less water in their composition than obsidians (often a thousand times less). Also obsidians when heated will foam from the gases and water they contain and this is one method of tektite testing. At the same temperature tektite glass may produce a few gentle bubbles. Tektites are made of a glass which melts at a far higher temperature and it is far more viscous.

Where did tektites come from? There have been several schools of thought over the last hundred years, but basically today it distills down to the Earth through the impact of a meteorite or comet.

In a cratering event, soil and rock are liquefied, or vaporized. There is question as to how long the tektites took to form and how high they were ejected. Was it a simple trajectory or did they travel high nearly into space? It is clear that part of the time they traveled at very high speed for they had to traverse great distances. The Australasian strewnfield is thousands of kilometers across. It is thought by impact theorists that they are shaped in a plastic state as they spin. Later there may be some mostly minor shaping by ablation. In regard to the Australites, it is clear from cross sectional analysis that they are a remelted object. Unlike the other tektites they received a major part of their final shape by ablation. However, the button portion of the posterior side has internal flow lines unchanged by remelting while those on the incoming ablated side are turned an pulled. Clearly, the internal structure was established and set, before the hypersonic ablation in the atmosphere.

Current chemical analysis of tektites indicates that there is a relationship to rocks only found on Earth. Fifteen rare earth elements have been used to show that their relative abundances are in exact relationship to their abundance in tektites. Including an anomaly in the amount of Europium. This depletion of Europium is connected to calcium and CO2 chemistry on the Earth. This depletion is exactly recorded in tektite glass. Melting a granite like rock will essentially make tektite glass composition. Oversimplification but actually close since many sedimentary rock thought to be used for tektites are derived from granites.

Tektites are found sometimes as irregular blobs and angular fragments, but often they are clearly a splash form of one type or another. These splash forms include, spheres, discs, rods, teardrops, dumbbells, and varieties of all these with bending and slumping. Some of the forms listed are clearly a result of the exaggeration of the cause processes of another form. For example teardrops are by all appearances the result of the continued separation of the bulbed ends of dumbbells which have become too thin in the middle to stay connected. Careful examination of the thin pointed end of an undamaged teardrop will reveal that it has the same fine texture as the rest of the piece and is not the result of breakage. It has become a complete individual. The discs will often have a cavity in the middle of each side causing them to be thinner in cross section in the middle. On a much smaller percentage of the discs there will be a peak where they have also spun off of another portion.

Spheres may have a smooth surface or the pieces may be deeply grooved. The spheres are also amongst the most stressed of the tektites often shattering into dozens of pieces when an attempt is made to cut tektites. Besides nearly perfect spheres they occur in the whole spectrum of flatten and elongated round forms.

The dumbbells as the name implies have knobs at each end connected by a middle which is thinner. The rod forms are similar to the dumbbells in size but have neither the thick knobs nor the thinner middle. They are just rods with usually rounded ends.

Some of these forms will show a slight ridge on occasion indicating ablation, but the Australites are the real aerodynamic shaped tektites. In their case ablation has done much to give them their form. Australite buttons have a hemispherical side often showing a spiraling raised

line. The technical name for this is "ring wave'' it is a featured created as the surface melted, partly burned away, and partly re-deposited in the flange. The flange of Australite buttons is a ring of material around the original core that builds up but does not completely weld itself to the original mass. On occasion the entire forward facing side and flange will detach leaving a distinctive core. These flangless cores are found also. Australites come in elongated forms as well as round.

Tektites come in many sizes however, complete splashform types fall in the range of from one inch to four inches. Their weight in the 10 to 100 gram range. (Please excuse the generalizations, this is for the readers who have not seen them and have no idea of the exceptions that the tektite enthusiast will be familiar with.) They can be much smaller and much larger than the figures above, but for a simple average the range given may be useful.

Tektites are not usually smooth, they are usually pitted or

grooved or a combination of both. More often than not they have a bald spot which is smooth. Many attempts have been made to explain the pitting. It has been thought to be from exposure to chemicals in the ground. Another explanation is that it is part of their form received before landing, perhaps during flight in the atmosphere. The inside of broken bubbles will often be shinny showing almost no etching, yet it has been exposed to the same chemicals for the entire time the tektite has been on earth. The back un-ablated side of Australites will often be textured and old looking while the ablated front surface and both surfaces of the flange will appear very fresh. Again the time spent in the ground was of course the same. The mechanism of texturing may be a process called spallation. Pieces of glass pop out of the surface coming through the atmosphere. Some experimentation has confirmed this as a possibility.

Tektites have been found with other artifacts in archaeological sites dating back thousands of years. They have a long history of use and significance to man. Ancient man in many places took advantage of the glassy nature of tektites and used them for making flaked tools. Later, they were considered to have religious significance in Asia, the colorful green varieties (Moldavites) of Europe have been used for jewelry for hundreds of years and are making a return as gems today.

Tektites are not found everywhere on the Earth. They are found in strewnfields; which are areas where the material has fallen upon the ground and the material is confined to the boundaries of the strewnfield. Tektites are found more or less randomly within the strewnfield. In the case of meteorite strewnfields the heavier fragments will be found at the farthest travel end of the dispersion ellipse.

In addition to the large forms found on the land, microtektites are recovered in cores of sediments taken from the oceans. This data helps to define the boundaries of the strewnfields in the areas covered by ocean waters.

There are four well established strewnfields on the Earth and some other locations where tektite glass or very similar glass is found. The strewnfields are the North American (Georgia and Bediasite Tektites), The Moldavite, which is really two small strewnfield close to each other in Europe, The Ivory Coast, and The Australasian.

Debate continues as to whether tektites are found on the same spot where they fell, or whether they have been transported. Many scientists insist that they are found close to where they fell because studies indicate being glass they break very fast in a river or stream or flood situation. Others strive to prove that they have been worked from other strata and redeposited.

It is however clear in some cases that they are found in essentially the spot they fell and in a specific layer or horizon in the ground.

by The Meteorite Exchange, Inc : http://www.meteorite.com/