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Each purchase comes with a gem jar containingextraterrestrial olivine peridot crystals and a specimen identification card. Thegem jar measures 1" across and contains 0.30 grams of olivine crystals.
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Hi there, I am selling this amazing gem jar of olivinecrystals from an Admire Pallasite Meteorite! These are 100% authentic crystalsfrom space! These gem jars are perfect for display. Each gem jar will include aspecimen card, including my IMCA membership number, guaranteeing theauthenticity of your purchase. Please look below for more information about theIMCA. Meteorites are one of the RAREST materials on earth, morerare than diamonds!!!! Pallasite meteorites are especially rare! This meteoritefell in the Kansas. This is one of the most prized possessions I have and Iknow it would make an AMAZING addition to any collection of ANY type, but especially of meteorites and stones! Don't let this one pass you by. Anyway, I amoffering it here, now, for you. If youhave any questions, do not hesitate to ask me.
If you purchase from me you should know that theauthenticity of this meteorite is guaranteed!
I am a member of the IMCA or the International MeteoriteCollector's Association. This is an organization that is a check and balance ofthose who collect, trade and sell meteorites. You can only join thisorganization by having the utmost integrity. You must to have two referencesfrom existing members to get in and a good reputation. Members of thisorganization maintain a high standard by monitoring each others' activities foraccuracy and honesty. It is every IMCA member's responsibility and pleasure tooffer help and assistance to fellow members in order to ensure specimens aregenuine. It is not wise to purchase meteorites on or other sources fromthose who are not IMCA members. This is a very tight-knit community made up ofmeteorite hunters, dealers, collectors, and scientists who look out for eachother to make sure that the meteorites offered to the public are authentic andgenuine. I encourage you to visit the IMCA website and get more information onwhat being a member means, and how your purchases from its members areguaranteed.
IMCA Member #7446
Below is some information about this meteorite:
Pallasite
From Wikipedia, the free encyclopedia
Pallasite
Type Stony-iron
Subgroups
Main group Eagle Station grouplet Pyroxene Pallasitegrouplet Ungrouped Pallasites
Composition Meteoriciron, Silicates
Total known specimens 49Main group, 4 Eagle Station, 2 Pyroxene grouplet, 38 ungrouped (93 total)
The pallasites are a class of stony–iron meteorite.
Contents [hide]
1 Structureand composition
2 Classificationand subgroups
3 Origin
4 History
5 Pallasitefalls
6 Notablepallasite finds
7 Notes
8 References
9 See also
10 Externallinks
Structure and composition[edit]
It consists of centimeter-sized olivine crystals of peridotquality in an iron-nickel matrix. Coarser metal areas develop Widmanstättenpatterns upon etching. Minor constituents are schreibersite, troilite,chromite, pyroxenes, and phosphates (whitlockite, stanfieldite, farringtonite,and merrillite).[1][2]
Classification and subgroups[edit]
Eagle Station, ES group
Using the oxygen isotopic composition, meteoric ironcomposition and silicate composition pallasites are divided into 4subgroups:[3][4]
Main group pallasites (PMG): Almost all pallasites
Eagle Station grouplet (PES): 4 specimens known. They arerelated to IIF irons.
Pyroxene Pallasite grouplet (PPX): Counts only Vermillionand Yamato 8451. They take their name from the high orthopyroxene content(about 5%). Metal matrix shows a fine octahedrite Widmanstätten pattern.
Pallasite ungrouped (P-ung): Specimens that don't fit intoany groups or grouplets
Origin[edit]
Pallasites were once thought to originate at the core-mantleboundary of differentiated asteroids that were subsequently shattered throughimpacts. An alternative recent hypothesis is that they are impact-generatedmixtures of core and mantle materials.[5]
History[edit]
Krasnojarsk meteorite
A common error is to associate their name with the asteroid2 Pallas but their actual name is after the German naturalist Peter Pallas(1741–1811), who studied in 1772 a specimen found earlier near Krasnoyarsk inthe mountains of Siberia that had a mass of 680 kilograms (1,500 lb).[a] TheKrasnoyarsk mass described by Pallas in 1776 was one of the examples used byE.F.F. Chladni in the 1790s to demonstrate the reality of meteorite falls onthe 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 thelarge piece could not have been accidentally transported to the find site), butits content of native metal was similar to other finds known from completelydifferent areas.[6][7]
Pallasite falls[edit]
Pallasites are a rare type of meteorite. Only 61 are knownto date, including 10 from Antarctica, with four being observed falls.[8][9]The following four falls are in chronological order:
Mineo, Sicily, Italy. A luminous meteor was observed and anobject seen to fall with a loud roar in May 1826. Only 46 grams (1.6 oz) arepreserved in collections.
Zaisho, Japan. 330 g were found on February 1, 1898,[10]after the appearance of a fireball.
Marjalahti, Karelia, Russia. After the appearance of abright meteor and detonations, a large mass was seen to fall and 45 kilograms(99 lb) were recovered in June 1902. At this date the fall site belonged toFinland, and the main mass of Marjalahti is now at the Geological Museum of theUniversity of Helsinki.
Omolon, Magadan Region, Russia. A reindeer-breeder observedthe fall on May 16, 1981, and found the 250 kilograms (550 lb) meteorite twoyears later. The fall was confirmed by a meteorological station that hadobserved a fireball on the same date.
Notable pallasite finds[edit]
Brenham
Imilac full slice
Although pallasites are a rare meteorite type, enoughpallasite material is found in museums and meteorite collections and isavailable for research. This is due to large finds, some of which yielded morethan a metric ton. The following are the largest finds:
Brenham, Kansas, United States. In 1890 the find of about 20masses with a total weight of 1,000 kilograms (2,200 lb) around the shallowHaviland Crater were reported. More masses were found later, including one of454 kilograms (1,001 lb) from a depth of 5 feet (1.5 m), the total amounting toabout 4.3 tonnes (4.2 long tons; 4.7 short tons). A piece of 487 kilograms(1,074 lb) is in the Field Museum of Natural History, Chicago. In 2005, SteveArnold of Arkansas, USA, and Phil Mani of Texas, USA, unearthed a large mass of650 kilograms (1,430 lb) and in 2006 several new large masses [11][12]
Huckitta, Northern Territory, Australia. A mass of 1,400kilograms (3,100 lb) was found in 1937 on a cattle station north-east of AliceSprings. Earlier, in 1924, a transported piece of about 1 kilogram (2.2 lb) hadbeen found on Burt Plain north of Alice Springs.
Fukang, Xinjiang Province, China. A mass of 1,003 kilograms(2,211 lb) was recovered in 2000.
Imilac, Atacama Desert, Chile; known since 1822. Numerousmasses up to 200 kilograms (440 lb) were found, the total weight is about 920kg.
Brahin, Gomel Region, Belarus, known since 1810. Many masseswere found strewn in a field, with a total weight of about 820 kg. Anadditional mass of 227 kg was found at a depth of 10 feet (3.0 m) in 2002.
Esquel, Chubut, Argentina. A large mass of 755 kg was foundembedded in soil before 1951.
Pallasovka, Pallasovka, Russia. A single mass of 198 kg wasfound near Pallasovka, Russia in 1990. Coincidentally, both the town ofPallasovka and pallasite meteorites were named after the naturalist, PeterPallas.
Krasnojarsk, Yeniseisk, Russia. A mass of about 700 kg wasdetected in 1749 about 145 miles (233 km) south of Krasnojarsk.[13] It was seenby P. S. Pallas in 1772 and transported to Krasnojarsk (see above). The mainmass of 515 kg is now in Moscow at the Academy of Sciences. Pallasites arenamed after Peter Pallas for his study of this meteorite.
Seymchan, discovered near the town by the same name, in fareastern Russia in 1967. This main group Pallasite has some areas free ofolivine crystals, and may have formed near the junction of the core and themantle of an asteroid. Multiple masses in excess of 1 tonne have beenrecovered.
