Sample RM145A

NavDat sample number 33423 · SYENITE

Sample

Sample ID	RM145A
Rock name	SYENITE
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	60.68		WT%	XRF
TIO2	1.14		WT%	XRF
AL2O3	16.88		WT%	XRF
FEOT	4.67		WT%	ICPAES
MNO	0.11		WT%	XRF
MGO	0.98		WT%	XRF
CAO	2.49		WT%	XRF
NA2O	6.25		WT%	XRF
K2O	6.02		WT%	XRF
P2O5	0.25		WT%	XRF
TOTAL	99.47		WT%	XRF
RB	113		PPM	ICPAES
SR	547		PPM	ICPAES
BA	1979		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. .