Sample A-490

NavDat sample number 32302 · GRANODIORITE

Sample

Sample ID	A-490
Rock name	GRANODIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	37.2883
Longitude	-118.797
Location	John Muir
State / province	California
Pluton	Lake Edison Granodiorite

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
90		81	99

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	68.8		WT%	RAPID_ROCK
TIO2	0.39		WT%	RAPID_ROCK
AL2O3	15.4		WT%	RAPID_ROCK
FE2O3	1.7		WT%	RAPID_ROCK
FEO	1.4		WT%	RAPID_ROCK
MNO	0.1		WT%	RAPID_ROCK
MGO	1.1		WT%	RAPID_ROCK
CAO	2.9		WT%	RAPID_ROCK
NA2O	3.4		WT%	RAPID_ROCK
K2O	3.9		WT%	RAPID_ROCK
P2O5	0.17		WT%	RAPID_ROCK

References

Bateman, Paul C; Dodge, Franklin C W; Bruggman, Peggy E (1984) Major oxide analyses, CIPW norms, modes, and bulk specific gravities of plutonic rocks from the Mariposa 1 degrees by 2 degrees sheet, central Sierra Nevada, California. Open-File Report - U. S. Geological Survey, Report: OF 84-0162, 59 pp., 1984