H Group
This large group counts more than 7.000 members (including lots of probable pairings), and it has been named for the high content of free nickel-iron that is characteristic for the meteorites of this group - the "H" standing for "high iron". H chondrites contain a weight percentage of 25 to 31% total iron whereas only 15 to 19% nickel-iron is found in its free, reduced form. Hence, all H chondrites are attracted to a magnet quite easily.
The H chondrites belong to petrological types 3 - 7, with a characteristic peak at type 5. More than 3,400 members of this group have been classified as H5, about 1,800 are H6, and about 1,400 are H4. There are only about 200 H3s as well as some rare, heavily brecciated members that contain lithic clasts of several petrological types. The primary minerals are olivine and the orthopyroxene bronzite. For this reason the H chondrites have also been called "olivine bronzite chondrites" or "bronzite chondrites", but those names are no longer in use.
The comparisons of the reflectance spectra of the H chondrites to the spectra of several main belt asteroids have yielded a probable parent body - the asteroid 6
Hebe. However, 6 Hebe might not be the direct source of the H chondrites but only some sort of
ancestor. Probably 6 Hebe collided with another asteroid at one time of his history and larger parts of it were dislodged into an elliptical near-earth
orbit. The resulting swarm of NEOs, the children of 6 Hebe, are thought to be the true parent bodies from which the H chondrites are
derived
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NWA 532
H3.8, ordinary chondrite
found in 2000, Morocco
TKW 2.83 kg
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NWA 532 00
51.83 gr
Endcut with partial fusion crust
SOLD |
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NWA 532 01
17.42 gr
Slice with crust on the edge
SOLD
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NWA 532 02
18.22 gr
Thick slice with part of crust
$ 90
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NWA 532 03
14.08 gr
Thick slice with part of crust
70 $
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NWA 532 04
22.64 gr
Endcut with partial fusion crust
$
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NWA 532 05
5.22 gr
Nice slice with part of crust
115 $
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NWA 532 06
9.45 gr
Small endcut with part of crust
$ 50
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NWA 532 07
7.11 gr
Thick slice for this primitive type !
$40
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NWA 532 08
7.97 gr
Small endcut
$ 40
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NWA 532 09
6.42 gr
Small and nice slice
$ 35
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NWA 532 10
7.58 gr
Small and nice Type 3
$ 40
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NWA 532 11
6.64 gr
Nice slice
35 $
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NWA 532 12
2.19 gr
Tiny and so pretty endcut !
$ 15
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NWA 532 13
1.30 gr
Tiny endcut !
10 $
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