Dyarrl Island meteorite, Dyaul Island, New Ireland Province, Papua New Guineai
Regional Level Types | |
---|---|
Dyarrl Island meteorite | Meteorite Fall Location |
Dyaul Island | Island |
New Ireland Province | Province |
Papua New Guinea | Country |
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Latitude & Longitude (WGS84):
3° South , 151° East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Kavieng | 14,490 (2018) | 52.6km |
Mindat Locality ID:
262463
Long-form identifier:
mindat:1:2:262463:4
GUID (UUID V4):
aa262001-72a9-4ef3-8142-81f4e4ad6230
Mesosiderite-A1 (Stony-Iron, brecciated)
Fall, 31 Jan 1933; 188 g
The Dyarrl Island meteorite fell on Dyaul Island off of New Ireland, New Guinea. It is customary to retain the original name once a meteorite is identified and enters into the literature — even if misspelled — so as to retain a unique label for each meteorite. Dyarrl Island was the 4th of only 7 witnessed mesosiderite falls [as of 2014], but it by far the smallest. It is also the most silicate rich of all mesosiderite falls. Mesosiderites are usually roughly half-half mixtures of Fe-Ni metal and orthopyroxene-dominated silicates, but there is quite a bit of variability in both the proportions and mineralogy of the metal and silicates. Dyarrl Island's proportions (~80 wt% metal, ~17 wt% metal, > 2 wt% troilite) are unusually high. Sampling issues may limit the implications of these proportions for such a small and highly brecciated meteorite, but the relatively Fe-rich pyroxenes [hypersthene (Fs45), Pigeonite (En52)] suggest that an unusual chemistry may be in play. And in any case, Dyarrl Island still presents an interesting mix of mineralogical diversity. The silicates include the original orthopyroxene with exsolved augite, inverted pigeonite, accessory plagioclase, and minor tridymite. Fe-Ni metal (9.5 wt% Ni) is mostly kamacite with minor taenite. Minor amounts of troilite and ilmenite are accompanied by even smaller amounts of chromite, schreibersite, merrillite and graphite.
The main mass is in Sydney at the Australian Museum. The coordinates are only approximate.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
11 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:
ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Description: Exsolved during cooling of orthopyroxene |
ⓘ Chromite Formula: Fe2+Cr3+2O4 |
ⓘ 'Clinopyroxene Subgroup' Description: Clinopyroxenes include both Ca-poor pigeonite (En-52)[notably Fe-rich for a mesosiderite] and Ca-rich augite (exsolved from primary orthopyroxene [also relatively Fe-rich]) |
ⓘ Graphite Formula: C |
ⓘ 'Hypersthene' Formula: (Mg,Fe)SiO3 |
ⓘ Ilmenite Formula: Fe2+TiO3 References: |
ⓘ Iron Formula: Fe |
ⓘ Iron var. Kamacite Formula: (Fe,Ni) |
ⓘ Merrillite Formula: Ca9NaMg(PO4)7 |
ⓘ 'Orthopyroxene Subgroup' Description: Primary References: |
ⓘ Pigeonite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 |
ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 References: |
ⓘ 'Pyroxene Group' Formula: ADSi2O6 |
ⓘ Schreibersite Formula: (Fe,Ni)3P |
ⓘ Taenite Formula: (Fe,Ni) |
ⓘ Tridymite Formula: SiO2 References: |
ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Iron var. Kamacite | 1.AE.05 | (Fe,Ni) |
ⓘ | 1.AE.05 | Fe | |
ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
ⓘ | Graphite | 1.CB.05a | C |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Troilite | 2.CC.10 | FeS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
ⓘ | Tridymite | 4.DA.10 | SiO2 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
ⓘ | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
Group 9 - Silicates | |||
ⓘ | Pigeonite | 9.DA.10 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Unclassified | |||
ⓘ | 'Hypersthene' | - | (Mg,Fe)SiO3 |
ⓘ | 'Clinopyroxene Subgroup' | - | |
ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
ⓘ | 'Orthopyroxene Subgroup' | - |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | ⓘ Graphite | C |
O | Oxygen | |
O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
O | ⓘ Chromite | Fe2+Cr23+O4 |
O | ⓘ Hypersthene | (Mg,Fe)SiO3 |
O | ⓘ Ilmenite | Fe2+TiO3 |
O | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
O | ⓘ Tridymite | SiO2 |
O | ⓘ Merrillite | Ca9NaMg(PO4)7 |
O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
O | ⓘ Pyroxene Group | ADSi2O6 |
Na | Sodium | |
Na | ⓘ Merrillite | Ca9NaMg(PO4)7 |
Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Mg | Magnesium | |
Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Mg | ⓘ Hypersthene | (Mg,Fe)SiO3 |
Mg | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Mg | ⓘ Merrillite | Ca9NaMg(PO4)7 |
Al | Aluminium | |
Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | Silicon | |
Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Si | ⓘ Hypersthene | (Mg,Fe)SiO3 |
Si | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Si | ⓘ Tridymite | SiO2 |
Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | ⓘ Pyroxene Group | ADSi2O6 |
P | Phosphorus | |
P | ⓘ Schreibersite | (Fe,Ni)3P |
P | ⓘ Merrillite | Ca9NaMg(PO4)7 |
S | Sulfur | |
S | ⓘ Troilite | FeS |
Ca | Calcium | |
Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Ca | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Ca | ⓘ Merrillite | Ca9NaMg(PO4)7 |
Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Ti | Titanium | |
Ti | ⓘ Ilmenite | Fe2+TiO3 |
Cr | Chromium | |
Cr | ⓘ Chromite | Fe2+Cr23+O4 |
Fe | Iron | |
Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Fe | ⓘ Hypersthene | (Mg,Fe)SiO3 |
Fe | ⓘ Ilmenite | Fe2+TiO3 |
Fe | ⓘ Iron | Fe |
Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
Fe | ⓘ Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Fe | ⓘ Schreibersite | (Fe,Ni)3P |
Fe | ⓘ Taenite | (Fe,Ni) |
Fe | ⓘ Troilite | FeS |
Ni | Nickel | |
Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
Ni | ⓘ Schreibersite | (Fe,Ni)3P |
Ni | ⓘ Taenite | (Fe,Ni) |
Other Regions, Features and Areas containing this locality
North Bismarck PlateTectonic Plate
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