Hamlet meteorite, Starke County, Indiana, USAi
| Regional Level Types | |
|---|---|
| Hamlet meteorite | Meteorite Fall Location |
| Starke County | County |
| Indiana | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 22' 59'' North , 86° 36' 0'' West
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Knox | 3,597 (2017) | 9.9km |
| Koontz Lake | 1,557 (2017) | 10.3km |
| Kingsford Heights | 1,421 (2017) | 13.2km |
| Walkerton | 2,264 (2017) | 13.4km |
| Hanna | 463 (2017) | 15.3km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Michiana Gem & Mineral Society, Inc. | South Bend, Indiana | 44km |
Ordinary chondrite, brecciated (LL4; S4; W0,W2)
Fell, 13 October 1959; 3.705 kg
A 2.045 kg conical stone stuck a home and was found in the yard 30 minutes later. A second stone was recovered from a farm pasture in 1963. The stone is a clearly brecciated meteorite with diverse clasts that are both chondrule-rich and recrystallized within a chondritic host. Chondrules, both olivine-rich and pyroxene-rich (BO, PO, POP, RP) range in size from ~ 0.4—1.5 mm. Olivine (Fa22) and orthopyroxene are dominant with Fe-Ni metal, troilite, and a few other minor opaques. Total iron (~20 wt%) is characteristic of the LL ordinary chondrite group (very low in total iron). The unexpected presence of nepheline indicates some unusual chemistry for this particular meteorite. A cosmic ray exposure age of ~ 40.6 Ma has been reported.
Hamlet is one of only 88 witnessed LL falls and one of only 7 falls listed exactly as an LL4 with The Meteoritical Bulletin Database (Tally of late January 2016). The LL group of ordinary chondrites account for somewhat less than 10% of all meteorite falls.
Major portions of the two stones have been kept at the Field Museum of Natural History (Chicago) and the U.S. National Museum (Washington), respectively.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
12 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:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ 'Fayalite-Forsterite Series' Description: Fayalite value in Mason (1963) and Rubin (1990) are very similar (Fa27),(Fa26.9), respectively. References: Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0 |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Merrillite Formula: Ca9NaMg(PO4)7 Description: Reading "Merrillite" (preferred) for "Whitlockite" (the terrestrial analogue). |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Iron Formula: Fe References: |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) References: |
| ⓘ Nepheline Formula: Na3K(Al4Si4O16) |
| ⓘ 'Orthopyroxene Subgroup' |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ 'Plessite' |
| ⓘ Schreibersite Formula: (Fe,Ni)3P |
| ⓘ Spinel Formula: MgAl2O4 |
| ⓘ Taenite Formula: (Fe,Ni) |
| ⓘ Tetrataenite Formula: FeNi |
| ⓘ Troilite Formula: FeS References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
| ⓘ | Tetrataenite | 1.AE.10 | FeNi |
| ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
| 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 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
| Group 9 - Silicates | |||
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Nepheline | 9.FA.05 | Na3K(Al4Si4O16) |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Plessite' | - | |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Mazatzal DomainDomain
- Mazatzal TerraneVolcanic Arc
- Michigan BasinBasin
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References
Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0
Rubin, Alan E. (1990) Kamacite and olivine in ordinary chondrites: Intergroup and intragroup relationships. Geochimica et Cosmochimica Acta, 54 (5) 1217-1232 doi:10.1016/0016-7037(90)90148-e
