Sample RM162

NavDat sample number 33425 · DIORITE

Sample

Sample ID	RM162
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	29.25
Longitude	-103.55
Location	central zone, Rattlesnake Mountain sill
State / province	Texas

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
28.6		26	38

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	50.7		WT%	XRF
TIO2	2.74		WT%	XRF
AL2O3	16.4		WT%	XRF
FEOT	10.22		WT%	ICPAES
MNO	0.19		WT%	XRF
MGO	3.65		WT%	XRF
CAO	5.67		WT%	XRF
NA2O	5.17		WT%	XRF
K2O	2.98		WT%	XRF
P2O5	1.16		WT%	XRF
TOTAL	98.88		WT%	XRF
RB	55		PPM	ICPAES
SR	1121		PPM	ICPAES
ZR	376		PPM	ICPAES
BA	1009		PPM	ICPAES

References

Carman-Max-F Jr.. (1994) Mechanisms of differentiation in shallow mafic alkaline intrusions, as illustrated in the Big Bend area, western Texas. Journal of Volcanology and Geothermal Research. 61; 1-2, Pages 1-44. 1994. .