Ages for Lawsonite at San Diego Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 187Ma - 11.2Ma at this locality

• 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
  Bradley_2012_014	99	95	Muscovite			3561	Little Three Mine (Little 3 Mine), Ramona, Ramona District, San Diego Co., California, USA	McCauley and Bradley (2014)	CM52_183
  Bradley_2012_108	96	94	Muscovite			3559	Himalaya Mine (Himalaya Dikes; Himalaya Pegmatite), Gem Hill, Mesa Grande District, San Diego Co., California, USA	McCauley and Bradley (2014)	CM52_183
  Giersdorf_00000326	95.7	95.1		Muscovite		3559	Himalaya Mine (Himalaya Dikes; Himalaya Pegmatite), Gem Hill, Mesa Grande District, San Diego Co., California, USA	Fisher et al. (1999)	RM73_156
  Giersdorf_00000327	93.7	93.1				3559	Himalaya Mine (Himalaya Dikes; Himalaya Pegmatite), Gem Hill, Mesa Grande District, San Diego Co., California, USA	Fisher et al. (1999)	RM73_156
  Giersdorf_00000328	93.4	92.8				3559	Himalaya Mine (Himalaya Dikes; Himalaya Pegmatite), Gem Hill, Mesa Grande District, San Diego Co., California, USA	Fisher et al. (1999)	RM73_156
  Giersdorf_00000329	143	101				3559	Himalaya Mine (Himalaya Dikes; Himalaya Pegmatite), Gem Hill, Mesa Grande District, San Diego Co., California, USA	Fisher et al. (1999)	RM73_156
  Giersdorf_00000330	102.4	94.4				6785	San Diego Mine (K. C. Naylor Mine), Gem Hill, Mesa Grande District, San Diego Co., California, USA	Fisher et al. (1999)	RM73_156
  Giersdorf_00000331	101.1	93.1		Muscovite		6785	San Diego Mine (K. C. Naylor Mine), Gem Hill, Mesa Grande District, San Diego Co., California, USA	Fisher et al. (1999)	RM73_156
  NAVDAT-123230	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123231	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123232	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123233	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123234	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123235	20	17.4				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123236	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123237	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123238	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123239	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123240	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-123241	20	11.2				91125	Atomic Flat Group, Jacumba, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126146	106	102				91184	Carrizo Canyon Deposit, Boulevard, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126147	111	107				91184	Carrizo Canyon Deposit, Boulevard, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126150	113	109				91640	Unnamed Silica Claim - 5, Campo, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126158	114.4	93.6				221463	Jamul, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126159	144	65				221463	Jamul, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126177	106	102				91669	Unnamed Gemstone Prospect (2), Dos Cabezas, Jacumba District, Jacumba Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126183	114.4	93.6				91193	Charles G. Moore Quarry, La Mesa, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126184	144	65				91193	Charles G. Moore Quarry, La Mesa, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126198	113	109				221415	Crest, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126199	109	105				91544	Red Rose Quarry, Crest, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126200	114.4	93.6				91544	Red Rose Quarry, Crest, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126202	120	116				91390	Laguna Junction Deposits (Benton Ranch Deposits), Pine Valley, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126203	113	109				91544	Red Rose Quarry, Crest, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126204	109	105				91357	Hoover Mine (Hoover Deposit; Hoover Lakeside Mine; Tunner Mine), Lakeside, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126213	109	105				91357	Hoover Mine (Hoover Deposit; Hoover Lakeside Mine; Tunner Mine), Lakeside, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126214	109	105				91357	Hoover Mine (Hoover Deposit; Hoover Lakeside Mine; Tunner Mine), Lakeside, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126216	144	65				91584	Silent King Prospect, Pine Valley, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126230	110	106				91488	Old Noble Mine, Alpine, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126231	110	106				221466	Alpine, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126252	110	106				91365	Iron Master Prospect (Cornellius; El Cajon), Lakeside, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126258	111	107				91276	Fee Claim, Mt Laguna, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126259	111	107				91276	Fee Claim, Mt Laguna, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126265	128.7	105.3				91115	Allen Borrow Pit, Descanso, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126267	106	102				253329	Sawtooth Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126280	109	105				91275	Featherstone Deposit, Lakeside, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126291	120	116				91461	Montana Group, Mt Laguna, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126294	118	116				91519	Pioneer Group, Julian, Julian District, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-126301	103	99				91635	Undetermined Au Prospect, Anza-Borrego Desert State Park, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44475	168	161				91384	Kitty Kay Group, Pine Valley, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44479	168	161				221362	Pine Valley, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44488	168	161				91639	Unnamed Silica Claim (1), Pine Valley, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44489	168	161				219749	Mt Laguna, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44491	168	161				91342	Henderson Deposit, Mt Laguna, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44496	168	161				91335	Harper Ranch Mine (Harper's; E.A. Harper), Mt Laguna, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44498	167	163				91420	Lucky Strike Group (Dam Fino Prospect; Long-Time-No-See Prospect; Pocket Prospect; Lucky Strike Prospect), Descanso, Laguna Mts, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44503	187	151	Zircon			91167	Butte Prospect, Julian, Julian District, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44507	167	163				91438	Maude E. Claim, Julian, Julian District, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44509	167	163				91438	Maude E. Claim, Julian, Julian District, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44512	167	163				11243	Friday Mine, Julian, Julian District, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44520	168	161				256606	San Felipe Garnet Mine, Banner, Banner District, San Diego Co., California, USA	NAVDAT	NAVDAT
  NAVDAT-44527	168	161				222001	Puerta La Cruz, Warner Springs District, San Diego Co., California, USA	NAVDAT	NAVDAT