Ages for Opal at Siskiyou Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 167Ma - 145Ma at this locality

• Age range from children

• Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
  Kristen002448	167	145				4064	Josephine Creek Placers, Josephine Creek District, Josephine Co., Oregon, USA	Lanphere et al. (1968)	GSAB79_1027

• Locality age

• Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
  Jen_0000129	1430	1430	Zircon			231840	Marble Mountain, Salmon Mts, Klamath Mts, Siskiyou Co., California, USA	Anderson (1983)	GSAM161_133
  NAVDAT-10023	0.54	0.42				94310	Glass Mountain Industries (Glass Mountain Volcolite Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-10025	0.06	0.04				93904	Block Pumice Claims (Glass Mountain Mine), Indian Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-129832	183.6032	150.2208				92666	Hearst Property, Dunsmuir, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-130041	0.08	0.01				94589	King Tut Mine, Lovers Leap, Klamath Mts, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-130042	0.08	0.01				94589	King Tut Mine, Lovers Leap, Klamath Mts, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-130046	0.009	0.009				94589	King Tut Mine, Lovers Leap, Klamath Mts, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-130057	0.25	0.13				94589	King Tut Mine, Lovers Leap, Klamath Mts, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-22445	1.11155	0.90945				232572	Indian Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-22459	1.11155	0.90945				94045	Unnamed Cinder Pit [2], Porcupine Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29586	1.8	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29587	1.8	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29588	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29589	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29590	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29591	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29592	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29593	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29594	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29595	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29596	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-29597	0.01	0				94270	Fouch Occurrence (Thompson Pumice Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-31574	1.8	0				94087	Copco Dam Borrow Pit, Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-31575	1.8	0				94087	Copco Dam Borrow Pit, Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-31576	1.8	0				94087	Copco Dam Borrow Pit, Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-31577	1.8	0				94087	Copco Dam Borrow Pit, Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-31578	1.8	0				94087	Copco Dam Borrow Pit, Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-43258	4.56	3.66				94087	Copco Dam Borrow Pit, Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-43259	9.18	8				232353	Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-5128	45	25				232080	Montague, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-5133	45	25				232080	Montague, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-5134	45	25				232080	Montague, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52833	0.549	0.029				93904	Block Pumice Claims (Glass Mountain Mine), Indian Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52861	0.549	0.029				232109	Little Mount Hoffman, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52885	0.549	0.029				232109	Little Mount Hoffman, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52893	0.549	0.029				215048	Unnamed Obsidian Occurrence [1], Cougar Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52950	0.549	0.029				95345	Unidentified Stone Location [11], Hippo Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52957	0.549	0.029				95314	Tionesta Quarry, High Hole Crater, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52958	0.549	0.029				95314	Tionesta Quarry, High Hole Crater, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-52992	0.549	0.029				94549	Johnson Mine (G. Z. Johnson), Paint Pot Crater, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53008	0.549	0.029				94046	Unnamed Cinder Pit [3], Porcupine Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53031	0.549	0.029				233665	High Hole Crater, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53032	0.549	0.029				233665	High Hole Crater, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53049	0.549	0.029				93904	Block Pumice Claims (Glass Mountain Mine), Indian Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53059	0.549	0.029				232109	Little Mount Hoffman, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53107	0.549	0.029				93997	Cougar Butte Occurrence (Canyon Butte; Couger Butte), Cougar Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53151	0.549	0.029				94045	Unnamed Cinder Pit [2], Porcupine Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53159	0.549	0.029				93904	Block Pumice Claims (Glass Mountain Mine), Indian Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53179	0.549	0.029				233664	Yellowjacket Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53191	0.549	0.029				94310	Glass Mountain Industries (Glass Mountain Volcolite Company), Glass Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53234	0.549	0.029				94592	Klamath Concrete Pipe Company, Black Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53260	0.549	0.029				95345	Unidentified Stone Location [11], Hippo Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-53390	3.04	0.583				94721	McCloud River Railroad Deposit, Indian Spring Mountain, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-8307	33	20				95453	Unnamed Au Placer [107], Ager, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-8310	33	20				95440	Unnamed Stone Deposit [22], Copco, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-8315	33	20				95453	Unnamed Au Placer [107], Ager, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93462	0.12	0.08				233317	Cinder Cone, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93471	0.12	0.08				95596	Yellow Butte Quarry, Yellow Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93482	0.006	0.002				122810	Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93486	0.006	0.002				122810	Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93487	0.006	0.002				122810	Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93523	0.01	0.0094				233224	Black Butte, Black Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93527	0.08	0.01				122810	Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93529	0.08	0.01				94293	Unnamed Gemstone Occurrence [2], Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93530	0.08	0.01				94293	Unnamed Gemstone Occurrence [2], Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93541	0.25	0.13				234181	Gray Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93542	0.25	0.13				234181	Gray Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93546	0.25	0.13				94790	Mount Shasta Gravel Company, Mount Shasta, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93556	0.25	0.13				232175	McKenzie Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93557	0.25	0.13				232175	McKenzie Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-93558	0.25	0.13				232175	McKenzie Butte, Cascade Range, Siskiyou Co., California, USA	NAVDAT	NAVDAT
  podchrome-00222	465	465			Cr	93808	Bagley Mine (Big Boy; Lucky Strike Claims; Josephine; Genesis), Mountain House, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00249	163	163			Cr	94128	Cyclone Gap Mine (Mammoth Mine), El Capitan, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00261	163	163			Cr	94157	Doe Flat Chromite Mine (Comeback Claim; Doe Flat Claim), Youngs Valley Group, Bear Mountain, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00275	465	465			Cr	94063	Coggins Mine, Dunsmuir, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00276	465	465			Cr	92742	Little Castle Creek Mine (Castle Crag Mine; Brown Mine), Dunsmuir, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00277	465	465			Cr	94424	Hayden And Hilt Mine (Genesis Mine), Mountain House, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00278	465	465			Cr	94170	Dozier Mine (Dorothy Mine; Genesio Mine; Gould Mine; Big Boy Mine; Mountain House Mine), Mountain House, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00279	465	465			Cr	94607	Peg Leg Mine (Lambert Claim; White And Brown Mine; Moffett Creek Group; Chromite King Mine), Bally Mountain, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00280	465	465			Cr	95169	Serpa Ranch, Chaparral Hill, Fort Jones, Oro Fino District, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00281	200	200			Cr	95235	Snowy Ridge Mine (Sally Anne Mine; Lucky Haul Mine), Beaver Creek District, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00282	200	200			Cr	94604	Ladd Mine (Klamath Chrome Mine; Dolbear Mine; Chromite Group), Granite Point, Klamath River District, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00283	200	200			Cr	94237	Fairview Mine (Fairview Chrome Mine; Hamburg Bar), Hamburg, Klamath River District, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00284	200	200			Cr	94565	Kangaroo Mountain Mine (Kubli-Scott Claim; Anniversary Claim; McGuire), Kangaroo Mountain, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00287	200	200			Cr	94209	Emma Bell Mine (Chrome Mountain Mine; Stanton Property; Blue Eagle And Black Eagle Claims), Cook And Green Butte, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00288	200	200			Cr	95164	Seiad Creek Mine (No. 14 Mine; Northern Klamath Mountains Mine; Red Hills Mine; Reddy No. 2 Mine; Teddy Chrome Mine; Valley View; Mountain View), Copper Butte, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00289	200	200			Cr	95528	Veta Chica Occurrence (Jumbo; Mil Diables), Tom Martin Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00290	200	200			Cr	94017	Cerro Colorado Mine (Milns And Richman Mine; Liberty Mine), Tom Martin Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00291	200	200			Cr	94730	McGuffy Creek Deposit (Veta Chica Mine; Veta Grande Mine; Red Butte; Grand Canyon; Lady Gray; Grand Falls; Cherro Colorado; Mary Lou), Tom Martin Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00292	200	200			Cr	94706	Mary Lou Claim (Chromite Claim; Octopus Claim), Tom Martin Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00293	200	200			Cr	94730	McGuffy Creek Deposit (Veta Chica Mine; Veta Grande Mine; Red Butte; Grand Canyon; Lady Gray; Grand Falls; Cherro Colorado; Mary Lou), Tom Martin Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00294	200	200			Cr	94358	Grand Canyon Occurrence (Napatana-Neptune), Tom Martin Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  podchrome-00295	200	200			Cr	94201	Elk Creek Claim (Buckhorn; Skin Shin), Huckleberry Mountain, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2012)	USGSSIR2012_5157
  USGS-U-Th-Pb-01431_206_238	161	157	Zircon			231951	Preston Peak, Klamath Mts, Siskiyou Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
  USGS-U-Th-Pb-01431_207_206	177	157	Zircon			231951	Preston Peak, Klamath Mts, Siskiyou Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
  USGS-U-Th-Pb-01431_207_235	161	157	Zircon			231951	Preston Peak, Klamath Mts, Siskiyou Co., California, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
  vms-01023	252	66				93923	Blue Ledge Mine (Blue Ledge Extension Mine), Windy Peak, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2009)	USGSOFR2009-1034
  vms-01030	170	170			S	94367	Gray Eagle Mine (Dakin Mine), Slater Butte, Klamath Mts, Siskiyou Co., California, USA	Moiser et al. (2009)	USGSOFR2009_1034

• Locality age (remote)

• Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
  Kristen002448	167	145				4064	Josephine Creek Placers, Josephine Creek District, Josephine Co., Oregon, USA	Lanphere et al. (1968)	GSAB79_1027