Sample M365

NavDat sample number 55248 · DACITE

Sample

Sample ID	M365
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	28.2
Longitude	-105.1
Location	Sierra Cajones
State / province	Chihuahua
Country	MEXICO
Location comment	E Chihuahua

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
34		30.6	37.4

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	66.7		WT%	XRF
AL2O3	15.1		WT%	XRF
FE2O3	0.87		WT%	XRF
FEO	3.11		WT%	XRF
MGO	1.54		WT%	XRF
CAO	3.69		WT%	XRF
NA2O	4.17		WT%	XRF
K2O	3.66		WT%	XRF
TIO2	0.78		WT%	XRF
P2O5	0.27		WT%	XRF
MNO	0.1		WT%	XRF
CE	71.3		PPM	UNKNOWN
ND	31.3		PPM	UNKNOWN
SM	6.03		PPM	UNKNOWN
EU	1.35		PPM	UNKNOWN
YB	2.6		PPM	UNKNOWN
RB	12.9		PPM	XRF
SR	379		PPM	XRF
Y	30		PPM	XRF
NB	20		PPM	XRF
ZR	207		PPM	XRF
SM	5.87		PPM	UNKNOWN
ND	30.5		PPM	UNKNOWN
SM147_ND144	0.116			UNKNOWN
ND143_ND144	0.5126			UNKNOWN

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