Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Muscovite 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 99Ma - 94Ma 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
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

Direct 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

Specified 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
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_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

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Dated Locality ID	Dated Locality	Ref	Ref ID
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
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