Pasamonte meteorite, Union County, New Mexico, USAi
Regional Level Types | |
---|---|
Pasamonte meteorite | Meteorite Fall Location |
Union County | County |
New Mexico | State |
USA | Country |
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Latitude & Longitude (WGS84):
36° 13' North , 103° 24' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
KΓΆppen climate type:
Mindat Locality ID:
259739
Long-form identifier:
mindat:1:2:259739:6
GUID (UUID V4):
613d7b84-df9c-4968-b3c7-7f8f945463a4
Fall, 24 March 1933; 5.1 kg; Spectacular bolide
Eucrite, polymict w. anomalous O-isotopes
Traveling at a low entry angle, a spectacular bolide was seen over a 500 km range in several states, its detonations were heard and felt for 150 km, and it then broke up at ~ 30 km altitude β leaving a cloud of dust in its wake. A large number of small stones were strewn over a length of ~40 km - often with nice fusion crusts over some or all of their surfaces. Except for its unusually friable texture, over the past few decades the Pasamonte meteorite has not seemed that different from most eucrites. First impressions can be expressed in quite conventional terms. Over 90% of this ancient meteorite is composed of a two-to-one pyroxene-plagioclase intergrowth of eucritic fragments. Pyroxene (mostly pigeonite) and plagioclase (mostly bytownite) fragments are variable and sometimes zoned as are many eucritic breccias. However, the number of reported minor phases (silicates, phosphates, opaques, etc.) is somewhat larger than usual for eucrites and a number of geochemical peculiarities have been noted. And, finally, in the past decade it has been reported and now confirmed (see references) that Pasamonte's oxygen-isotopes do not conform to the usual patterns observed β and now expected β for eucrites and the related howardites and diogenites (HED achondrites).
An impressive amount of information from HED meteorites, astronomical studies of Vestoids (asteroidal fragments of Vesta), and the Dawn spacecraft mission to Vesta has made it compellingly clear to most informed observers that Vesta is indeed the parent body of most eucrites and other HED meteorites. However, some of this information is also beginning to make it just as clear that a few of our 'eucrites' and 'howardites' are fragments from other ancient and moderately large, differentiated asteroids which seem to have disappeared from 'center stage.'
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
14 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:
β Anorthite Formula: Ca(Al2Si2O8) Description: An80-95 according to Sarafian et al., (2013) References: |
β Anorthite var. Bytownite Formula: (Ca,Na)[Al(Al,Si)Si2O8] |
β 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) Description: Apatite is mostly fluorapatite, but has a significant hydroxylapatite component is also present. |
β Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 References: |
β Augite var. Ferroaugite References: |
β Baddeleyite Formula: ZrO2 References: |
β Chromite Formula: Fe2+Cr3+2O4 References: |
β 'Fayalite-Forsterite Series' Description: Olivine is Fayalitic References: |
β Fluorapatite Formula: Ca5(PO4)3F |
β Ilmenite Formula: Fe2+TiO3 References: |
β Iron Formula: Fe Description: Ni-poor iron |
β Merrillite Formula: Ca9NaMg(PO4)7 |
β Pigeonite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Description: Abundant and variable -- (Mason et al., 1979) References: |
β 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Plagioclase (Ab12-20, ave 17)according to (Mason et al.,1979)
Plagioclase (variable, Anorthite & Bytownite) Steele & Smith (1982)
An80-95 according to Sarafian et al., (2013) References: |
β 'Pyroxene Group' Formula: ADSi2O6 References: |
β Quartz Formula: SiO2 |
β Tridymite Formula: SiO2 References: |
β Troilite Formula: FeS References: |
β Zircon Formula: Zr(SiO4) References: |
β Zirconolite Formula: CaZrTi2O7 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Iron | 1.AE.05 | Fe |
Group 2 - Sulphides and Sulfosalts | |||
β | Troilite | 2.CC.10 | FeS |
Group 4 - Oxides and Hydroxides | |||
β | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
β | Ilmenite | 4.CB.05 | Fe2+TiO3 |
β | Quartz | 4.DA.05 | SiO2 |
β | Tridymite | 4.DA.10 | SiO2 |
β | Baddeleyite | 4.DE.35 | ZrO2 |
β | Zirconolite | 4.DH.30 | CaZrTi2O7 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
β | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
β | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
Group 9 - Silicates | |||
β | Zircon | 9.AD.30 | Zr(SiO4) |
β | Pigeonite | 9.DA.10 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
β | Augite var. Ferroaugite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
β | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 | |
β | Anorthite var. Bytownite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
β | 9.FA.35 | Ca(Al2Si2O8) | |
Unclassified | |||
β | 'Fayalite-Forsterite Series' | - | |
β | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
β | 'Pyroxene Group' | - | ADSi2O6 |
β | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Apatite | Ca5(PO4)3(Cl/F/OH) |
O | Oxygen | |
O | β Anorthite | Ca(Al2Si2O8) |
O | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
O | β Baddeleyite | ZrO2 |
O | β Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
O | β Chromite | Fe2+Cr23+O4 |
O | β Fluorapatite | Ca5(PO4)3F |
O | β Ilmenite | Fe2+TiO3 |
O | β Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
O | β Quartz | SiO2 |
O | β Tridymite | SiO2 |
O | β Zircon | Zr(SiO4) |
O | β Zirconolite | CaZrTi2O7 |
O | β Merrillite | Ca9NaMg(PO4)7 |
O | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
O | β Pyroxene Group | ADSi2O6 |
O | β Apatite | Ca5(PO4)3(Cl/F/OH) |
F | Fluorine | |
F | β Fluorapatite | Ca5(PO4)3F |
F | β Apatite | Ca5(PO4)3(Cl/F/OH) |
Na | Sodium | |
Na | β Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
Na | β Merrillite | Ca9NaMg(PO4)7 |
Na | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Mg | Magnesium | |
Mg | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Mg | β Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Mg | β Merrillite | Ca9NaMg(PO4)7 |
Al | Aluminium | |
Al | β Anorthite | Ca(Al2Si2O8) |
Al | β Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
Al | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | Silicon | |
Si | β Anorthite | Ca(Al2Si2O8) |
Si | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Si | β Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
Si | β Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Si | β Quartz | SiO2 |
Si | β Tridymite | SiO2 |
Si | β Zircon | Zr(SiO4) |
Si | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | β Pyroxene Group | ADSi2O6 |
P | Phosphorus | |
P | β Fluorapatite | Ca5(PO4)3F |
P | β Merrillite | Ca9NaMg(PO4)7 |
P | β Apatite | Ca5(PO4)3(Cl/F/OH) |
S | Sulfur | |
S | β Troilite | FeS |
Cl | Chlorine | |
Cl | β Apatite | Ca5(PO4)3(Cl/F/OH) |
Ca | Calcium | |
Ca | β Anorthite | Ca(Al2Si2O8) |
Ca | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Ca | β Anorthite var. Bytownite | (Ca,Na)[Al(Al,Si)Si2O8] |
Ca | β Fluorapatite | Ca5(PO4)3F |
Ca | β Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Ca | β Zirconolite | CaZrTi2O7 |
Ca | β Merrillite | Ca9NaMg(PO4)7 |
Ca | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Ca | β Apatite | Ca5(PO4)3(Cl/F/OH) |
Ti | Titanium | |
Ti | β Ilmenite | Fe2+TiO3 |
Ti | β Zirconolite | CaZrTi2O7 |
Cr | Chromium | |
Cr | β Chromite | Fe2+Cr23+O4 |
Fe | Iron | |
Fe | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Fe | β Chromite | Fe2+Cr23+O4 |
Fe | β Ilmenite | Fe2+TiO3 |
Fe | β Iron | Fe |
Fe | β Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Fe | β Troilite | FeS |
Zr | Zirconium | |
Zr | β Baddeleyite | ZrO2 |
Zr | β Zircon | Zr(SiO4) |
Zr | β Zirconolite | CaZrTi2O7 |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Mazatzal DomainDomain
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