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| 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. |
| Alunite | Amorphous | Brannerite | Calcite | Clay | Corundum | Diaspore | Fluorite | Kaolinite | None |
| Pyrite | Quartz | Rutile | Scheelite | Schoepite | Smectite-vermiculite | Spinel | 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 |
|---|---|---|---|---|---|---|---|
| Alunite (*) | None | KAl3(SO4)2(OH)6 | 44.7 | 1.85 | 0 | 966 | |
| Becquerelite (*) | None | Ca(UO2)6O4(OH)6·8H2O | 13.1 | 2.7 | 0 | 92 | |
| Boltwoodite (*) | None | (K,Na)(UO2)(SiO3OH)·1.5H2O | 13.1 | 2.7 | 0 | 67 | |
| Calcite (*) | Calcite | Ca(CO3) | 44.7 | 1.85 | 0 | 27770 | |
| Carnotite (*) | None | K2(UO2)2(VO4)2·3H2O | 13.1 | 2.7 | 0 | 1184 | |
| Goethite (*) | Diaspore | FeO(OH) | 44.7 | 1.85 | 0 | 7437 | |
| Hematite (*) | Corundum | Fe2O3 | 44.7 | 1.85 | 0 | 14640 | |
| Ianthinite (*) | None | U4+2(UO2)4O6(OH)4·9H2O | 13.1 | 2.7 | 0 | 31 | |
| Ilmenite (*) | Corundum | Fe2+Ti4+O3 | 44.7 | 1.85 | 0 | 5433 | |
| Jarosite (*) | Alunite | KFe3+3(SO4)2(OH)6 | 44.7 | 1.85 | 0 | 2228 | |
| Kaolinite (*) | Clay Kaolinite | Al2Si2O5(OH)4 | 44.7 | 1.85 | 0 | 5591 | |
| Magnetite (*) | Spinel | Fe2+Fe3+2O4 | 44.7 | 1.85 | 0 | 14899 | |
| Metaschoepite (*) | Schoepite | (UO2)8O2(OH)12·10H2O | 13.1 | 2.7 | 0 | 17 | |
| Montmorillonite (*) | Clay Smectite-vermiculite | (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O | 44.7 | 1.85 | 0 | 1508 | |
| Opal (*) | Amorphous | SiO2·nH2O | 44.7 | 1.85 | 0 | 2994 | |
| Orthobrannerite (*) | Brannerite | U4+U6+Ti4O12(OH)2 | 13.1 | 2.7 | 0 | 5 | |
| Uranophane-β (*) | None | Ca(UO2)2(SiO3OH)2·5H2O | 13.1 | 2.7 | 0 | 144 | |
| Powellite (*) | Scheelite | Ca(MoO4) | 44.7 | 1.85 | 0 | 494 | |
| Pyrite (*) | Pyrite | FeS2 | 44.7 | 1.85 | 0 | 39462 | |
| Quartz (*) | Quartz | SiO2 | 44.7 | 1.85 | 0 | 61156 | |
| Rutile (*) | Rutile | TiO2 | 44.7 | 1.85 | 0 | 5614 | |
| Schoepite (*) | Schoepite | (UO2)4O(OH)6(H2O)6 | 13.1 | 2.7 | 0 | 94 | |
| Soddyite (*) | None | (UO2)2(SiO4)(H2O)2 | 13.1 | 2.7 | 0 | 44 | |
| Titanite (*) | Titanite | CaTi(SiO4)O | 44.7 | 1.85 | 0 | 4899 | |
| Uraninite (*) | Fluorite | UO2 | 13.1 | 2.7 | 0 | 2718 | |
| Uranophane-α (*) | None | Ca(UO2)2(SiO3OH)2·5H2O | 13.1 | 2.7 | 0 | 890 | |
| Vorlanite (*) | Fluorite | CaUO4 | 13.1 | 2.7 | 0 | 5 | |
| Weeksite (*) | None | (K)2(UO2)2(Si5O13)·4H2O | 13.1 | 2.7 | 0 | 42 |
| Age ID | Locality Notes |
|---|---|
| Giersdorf_00000810 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000811 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000812 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000813 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000814 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000815 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000816 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000817 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000818 | The Nopal I deposit is part of a Basin and Range horst composed of Tertiary rhyolitic tufts underlain by carbonate sedimentary rocks as is Yucca Mountain (Mesozoic carbonates at Nopal, Paleozoic carbonates at Yucca Mountain). Further, both the proposed Yucca Mountain repository horizon and the Nopal I deposit are located in the oxidizing, hydrologically unsaturated zone 100 m or more above the water table. The locality is similar chemically to the Yucca Mountain locality and is studied due to the chemical environment being ideal to store nuclear waste. |
| Giersdorf_00000955 | The Sierra Peña Blanca is located to the north of Aldama City (Chihuahua State). It corresponds to an uplifted faulted block about 80 km long and 15 to 20 km wide, of Mesozoic and Cenozoic rocks, surrounded by basins to the west and the east. The average elevation of the sierra is 1,800 m, whereas the basins are around 1,600 m and decrease gradually eastward. This sierra,as well as other sierras belonging to the Basin and Range system, presents a general northward strike, with a tilt to the west. |
| Giersdorf_00000955b | The Sierra Peña Blanca is located to the north of Aldama City (Chihuahua State). It corresponds to an uplifted faulted block about 80 km long and 15 to 20 km wide, of Mesozoic and Cenozoic rocks, surrounded by basins to the west and the east. The average elevation of the sierra is 1,800 m, whereas the basins are around 1,600 m and decrease gradually eastward. This sierra,as well as other sierras belonging to the Basin and Range system, presents a general northward strike, with a tilt to the west. |
| Giersdorf_00000956 | The Sierra Peña Blanca is located to the north of Aldama City (Chihuahua State). It corresponds to an uplifted faulted block about 80 km long and 15 to 20 km wide, of Mesozoic and Cenozoic rocks, surrounded by basins to the west and the east. The average elevation of the sierra is 1,800 m, whereas the basins are around 1,600 m and decrease gradually eastward. This sierra,as well as other sierras belonging to the Basin and Range system, presents a general northward strike, with a tilt to the west. |
| Giersdorf_00000957 | The Sierra Peña Blanca is located to the north of Aldama City (Chihuahua State). It corresponds to an uplifted faulted block about 80 km long and 15 to 20 km wide, of Mesozoic and Cenozoic rocks, surrounded by basins to the west and the east. The average elevation of the sierra is 1,800 m, whereas the basins are around 1,600 m and decrease gradually eastward. This sierra,as well as other sierras belonging to the Basin and Range system, presents a general northward strike, with a tilt to the west. |
| Giersdorf_00000958 | The Sierra Peña Blanca is located to the north of Aldama City (Chihuahua State). It corresponds to an uplifted faulted block about 80 km long and 15 to 20 km wide, of Mesozoic and Cenozoic rocks, surrounded by basins to the west and the east. The average elevation of the sierra is 1,800 m, whereas the basins are around 1,600 m and decrease gradually eastward. This sierra,as well as other sierras belonging to the Basin and Range system, presents a general northward strike, with a tilt to the west. |
| Giersdorf_00000959 | The Sierra Peña Blanca is located to the north of Aldama City (Chihuahua State). It corresponds to an uplifted faulted block about 80 km long and 15 to 20 km wide, of Mesozoic and Cenozoic rocks, surrounded by basins to the west and the east. The average elevation of the sierra is 1,800 m, whereas the basins are around 1,600 m and decrease gradually eastward. This sierra,as well as other sierras belonging to the Basin and Range system, presents a general northward strike, with a tilt to the west. |
| Giersdorf_00000960 | The Nopal 1 Deposit is confined to a breccia zone or pipe, limited to by faults. The breccia pipe is 100m high x 20m x 40m wide. The deposit is found within the Nopal Rhyolite. Uranium minerals found in the deposit are primarily oxidized. |
| Giersdorf_00000961 | The Las Margaritas Deposit is hosedted by the Escuadra Formation and is found on the axis of a tectonic valley. |
| Giersdorf_00000962 | The Puerto 3 deposit is located to the northwest of the Las Margaritas deposit and is hosted by the Nopal Rhyolite overlain by the Escuadra Formation. |
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Giersdorf_00000955 | 53.8 | 53.8 | 53.8-42.2 | Yes | 17023 | Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Peña Blanca | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | The age of 53.8 is given for altered biotites and 42.2 is given for sanidine. This is the referred to in the literature as unit 1. | ||||||||||
| Giersdorf_00000955b | 42 | 42 | Yes | 17023 | Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Peña Blanca | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | The age of 53.8 is given for altered biotites and 42.2 is given for sanidine. This is the referred to in the literature as unit 1. | |||||||||||
| Giersdorf_00000956 | 44.7 | 42.9 | 43.8±0.9 | sanidine | Yes | Sanidine | 17023 | Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Peña Blanca | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | Age given for the Nopal rhyolite which underlies what was previously referred to as the Escuadra Formation. The two are occasionally separated by a thin layer of pumice, but together make up what is referred to as unit 2 in the literature. | ||||||||
| Giersdorf_00000957 | 45.4 | 43.6 | 44.5±0.9 | sanidine | Yes | Sanidine | 17023 | Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Peña Blanca | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | Age given for what was previously referred to as the Escuadra formation, which overlies the Nopal Rhyolite. The two are occasionally separated by a thin layer of pumice, but together make up what is referred to as unit 2 in the literature. | ||||||||
| Giersdorf_00000958 | 38.3 | 38.3 | 38.3 | After approximately a 6 Ma hiatus, which is generalized in all of the surrounding areas, volcanic activity started again and formed the top part of the Escuadra Formation. | sanidine | Yes | Sanidine | 17023 | Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Peña Blanca | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | Age given for the upper part of the Escuadra Formation, still a component of Unit 2. | |||||||
| Giersdorf_00000959 | 37.3 | 37.3 | 37.3 | The age of the Mesa Formation is given to be the youngest volcanogenic rock of the area. | sanidine | Yes | Sanidine | 17023 | Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Peña Blanca | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | The Mesa formation is a component of what is referred to as Unit 5 of the locality. | |||||||
| Giersdorf_00000961 | 44.95 | 38.3 | 44.95-38.3 | Yes | Carnotite, Margaritasite, Molybdenite, Phosphuranylite, Powellite, Tyuyamunite, Uranophane, Parauranophane | U | 15672 | Margaritas No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Las Margaritas | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | Age of the deposit is given by the window of ages for the Escuadra Formation. | ||||||||
| Giersdorf_00000810 | 43.8 | 43.8 | 43.8 | The age of 43.8 is provided as a constrant on the maximum possible uranium mineralization age as that is the age given to the host rock. | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | |||||||||||
| Giersdorf_00000811 | 13.1 | 2.7 | 7.9±5.2 | U-Pb | Age is the average age from microprobe analysis on 7 samples | high | uraninite | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | |||||
| Giersdorf_00000812 | 11.58 | 7.72 | 9.65±1.93 | U-Pb | uraninite | 32-ts2-p1 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000813 | 10.1 | 6.08 | 8.09±2.01 | U-Pb | uraninite | 32-ts2-p4 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000814 | 5.55 | 1.85 | 3.7±1.85 | U-Pb | uraninite | 32-ts2-p5 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000815 | 15.21 | 11.41 | 13.31±1.9 | U-Pb | uraninite | 32-ts2-p6 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000816 | 12.36 | 8.26 | 10.31±2.05 | U-Pb | uraninite | 1-ts3-p1 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000817 | 6.22 | 2.08 | 4.15±2.07 | U-Pb | uraninite | 1-ts3-p2 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000818 | 8.12 | 4.06 | 6.09±2.03 | U-Pb | uraninite | 1-ts3-p6 | Uraninite | Becquerelite, Boltwoodite, Ianthinite, Schoepite, Soddyite, Uraninite, Weeksite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | Pearcy et al. (1994) | 10.1016/0883-2927(94)90030-2 | AG9_713 | ||||||
| Giersdorf_00000960 | 44.7 | 42.9 | 43.8±0.9 | The Nopal 1 Deposit and similar deposits are described as forming at the same time as the Nopal Rhyolite and are attributed its age. | Uraninite | U | 17009 | Nopal No. 1 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Nopal I mine | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | The Nopal 1 Deposit is used to describe the formation age of other similar deposits found in the Sierra Peña Blanca area, and are all found within the Nopal Rhyolite. | ||||||||
| Giersdorf_00000962 | 44.7 | 42.9 | 43.8±0.9 | Yes | Kaolinite, Montmorillonite, Uranophane, Parauranophane | U | 208595 | Puerto No. 3 Mine, Sierra Peña Blanca, Peña Blanca District, Aldama Municipality, Chihuahua, Mexico | Puerto 3 mine | George-Aniel et al. (1991) | 10.2113/gsecongeo.86.2.233 | EG86_233 | The age is derived from the age of the host Nopal Rhyolite. |
| Sample | Source Locality | Reference URL |
|---|---|---|
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