Sample BMS339

NavDat sample number 55249 · DACITE

Sample

Sample ID	BMS339
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	27.3
Longitude	-113.3
Location	Tres Virgenes
State / province	Baja California Sur
Country	MEXICO
Location comment	E Chihuahua

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
12		10.8	13.2

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	64.3		WT%	XRF
AL2O3	15.7		WT%	XRF
FE2O3	1.08		WT%	XRF
FEO	3.83		WT%	XRF
MGO	2.62		WT%	XRF
CAO	4.28		WT%	XRF
NA2O	3.85		WT%	XRF
K2O	3.32		WT%	XRF
TIO2	0.84		WT%	XRF
P2O5	0.2		WT%	XRF
CE	59.7		PPM	UNKNOWN
ND	28		PPM	UNKNOWN
SM	5.42		PPM	UNKNOWN
EU	1.1		PPM	UNKNOWN
YB	2.34		PPM	UNKNOWN
RB	103		PPM	XRF
SR	428		PPM	XRF
Y	28		PPM	XRF
NB	14		PPM	XRF
ZR	299		PPM	XRF

References

Cameron, Kenneth L; Cameron, M (1985) Rare earth element, 87Sr/86Sr, and 143Nd/144Nd compositions of Cenozoic orogenic dacites from Baja California, northwestern Mexico, and adjacent West Texas; evidence for the predominance of a subcrustal component. Contributions to Mineralogy and Petrology, vol.91, no.1, pp.1-11, 1985 doi:10.1007/BF00429422