A | This mineral is Anthropogenic. |
G | This mineral is directly dated. |
B | This mineral is reported as having this age. |
Y | This mineral is using an age reported as an element mineralization period. |
O | This mineral is using an age calculated from all data at the locality. |
R | The age displayed for this mineral originates from a different, non-child locality. |
P | The age displayed for this mineral is the range of ages for this mineral at all of this locality's children. |
This mineral's age has not yet been recorded. |
Analcime | Apatite | Calcite | Clay | Mica | None | Pyroxene | Spinel | Titanite | Tridymite |
Aegirine (*) | Analcime (*) | Calcite (*) | Diopside (*) | Fluorapatite (*) |
Magnetite (*) | Nepheline (*) | Phlogopite (*) | Titanite (*) |
Mineral name | Structural Groups | IMA Formula | Max Age (Ma) | Min Age (Ma) | # of Sublocalities containing mineral | LOCALITY IDs, not mindat ids | # of localities containing mineral |
---|---|---|---|---|---|---|---|
Aegirine (*) | Pyroxene | NaFe3+Si2O6 | 38 | 17.5 | 0 | 1022 | |
Analcime (*) | Analcime | Na(AlSi2O6)·H2O | 38 | 17.5 | 0 | 1627 | |
Calcite (*) | Calcite | Ca(CO3) | 38 | 17.5 | 0 | 27770 | |
Diopside (*) | Pyroxene | CaMgSi2O6 | 38 | 17.5 | 0 | 4135 | |
Fluorapatite (*) | Apatite | Ca5(PO4)3F | 38 | 17.5 | 1 | 77654 | 2740 |
Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 38 | 17.5 | 1 | 77654 | 14899 |
Nepheline (*) | Tridymite | Na3K(Al4Si4O16) | 38 | 17.5 | 0 | 884 | |
Phlogopite (*) | Mica Clay | KMg3(AlSi3O10)(OH)2 | 38 | 17.5 | 0 | 2273 | |
Titanite (*) | Titanite | CaTi(SiO4)O | 38 | 17.5 | 0 | 4899 |
Age ID | Locality Notes |
---|---|
Jen_0000408 | carbonatite complex with transitional alkali basalt composition |
Jen_0000638 | MAGMATIC STYLE: Central exposed complex within partially eroded volcano. ASSOCIATED SILICATE ROCKS: Pyroxenite, ijolite, nepheline syenite, phonolite, melilitolite and fenite; nephelinitic and melilitic lavas, tuffs and agglomerates. |
Jen_0000639 | MAGMATIC STYLE: Central exposed complex within partially eroded volcano. ASSOCIATED SILICATE ROCKS: Pyroxenite, ijolite, nepheline syenite, phonolite, melilitolite and fenite; nephelinitic and melilitic lavas, tuffs and agglomerates. |
Excel ID | Max Age (Ma) | Min Age (Ma) | Age as listed in reference | Dating Method | Age Interpret | Prioritized? | Sample Source | Sample Num | Run Num | Age from other Locality | Dated Mineral | Minerals explicitely stated as having this age | Age applies to these Elements | MinDat Locality ID | Dated Locality (Max Age) | Location as listed in reference | Reference | Reference DOI | Reference ID | Age Notes | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jen_0000408 | 38 | 17.5 | 38-17.5 | K-Ar | 285421 | Rangwa Carbonatite Complex, Homa Bay County, Kenya | Rangwa Complex | Ernst and Bell (2010) | 10.1007/s00710-009-0074-1 | MP98_55 | |||||||||||
Jen_0000638 | 28 | 28 | 28 | K-Ar | pyroxene, biotite | 285421 | Rangwa Carbonatite Complex, Homa Bay County, Kenya | Kisingiri and Rangwa | Woolley and Kjarsgaard (2008) | 10.4095/225115 | GSCOF5796 | ||||||||||
Jen_0000639 | 38 | 17.5 | 38-17.5 | K-Ar | pyroxene, biotite | 285421 | Rangwa Carbonatite Complex, Homa Bay County, Kenya | Kisingiri and Rangwa | Woolley and Kjarsgaard (2008) | 10.4095/225115 | GSCOF5796 |
Sample | Source Locality | Reference URL |
---|---|---|
All locality data graciously provided by mindat.org
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