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Haxtun meteorite, Phillips County, Colorado, USAi
| Regional Level Types | |
|---|---|
| Haxtun meteorite | Meteorite Fall Location |
| Phillips County | County |
| Colorado | State |
| USA | Country |
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Latitude & Longitude (WGS84):
40° 27' 24'' North , 102° 34' 41'' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Ordinary Chondrite (H/L4; S3; W4)
Find,1975; 15.5 kg, single stone
A weathered stone was found in a wheat field. Well-defined chondrules, mostly barred olivine (BO) with smaller amounts of pyroxene-rich types (PO, POP, RP), are intergrown within a dark, fine-grained matrix. Very nearly equilibrated olivine (Fa21.6) and orthopyroxene (Fs17.8) are accompanied by Fe-Ni metal and troilite. The Fe-Ni metal and troilite are frequently founds as irregular aggregates near chondrule rims. Minor amounts of plagioclase and chromite are also reported. Total Fe (~21 wt%) as well as silicate composition indicate an H/L chondrite. Mosaicism in olivine is indicative of significant pre-terrestrial shock (level S3). Iron oxides at the rims of metal grains and as narrow veins are indicative of significant terrestrial weathering (level W4).
The H/L ordinary chondrites — chondrites with intermediate compositions relative to the much larger H and L geochemical groups — represent a very small portion of the ordinary chondrite flux. Only 4 witnesses LL falls are know — less than 0.5% of all witnessed falls. The H/L4 petrologic type is small indeed — only one H/L4 fall is known (Cali) while Haxtun itself, a meteorite of rather modest mass, contains more mass than all the other H/L4 meteorites combined.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
4 valid minerals.
Meteorite/Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Chrome-Spinel (of Dana)' |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 References: |
| ⓘ 'Fayalite-Forsterite Series' Description: Olivine composition Fa21.6±0.4 represents near equilibration, References: |
| ⓘ 'Limonite' |
| ⓘ Native Iron Formula: Fe Description: Composition ~7.5 mg/g Co in Kamacite. |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) Description: Composition ~7.5 mg/g Co in Kamacite. |
| ⓘ 'Orthopyroxene Subgroup' Description: Equilibration of orthopyroxene [Fs17.8±1.3] lags behind equilibration of olivine. |
| ⓘ Spinel Formula: MgAl2O4 |
| ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Spinel | 4.BB.05 | MgAl2O4 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Chrome-Spinel (of Dana)' | - | |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Spinel | MgAl2O4 |
| O | ⓘ Fayalite-Forsterite Series | |
| Mg | Magnesium | |
| Mg | ⓘ Spinel | MgAl2O4 |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Al | Aluminium | |
| Al | ⓘ Spinel | MgAl2O4 |
| Si | Silicon | |
| Si | ⓘ Fayalite-Forsterite Series | |
| S | Sulfur | |
| S | ⓘ Troilite | FeS |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Native Iron | Fe |
| Fe | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Ni | Nickel | |
| Ni | ⓘ Native Iron var. Kamacite | (Fe,Ni) |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Denver BasinBasin
- Great Plains DomainDomain
- Yavapai TerraneVolcanic Arc
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