Sample RM180A

NavDat sample number 33420 · SYENITE

Sample

Sample ID	RM180A
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	52.98		WT%	XRF
TIO2	2.3		WT%	XRF
AL2O3	16.96		WT%	XRF
FEOT	8.14		WT%	ICPAES
MNO	0.15		WT%	XRF
MGO	2.9		WT%	XRF
CAO	5.84		WT%	XRF
NA2O	5.74		WT%	XRF
K2O	3.15		WT%	XRF
P2O5	0.94		WT%	XRF
TOTAL	99.1		WT%	XRF
RB	49.8		PPM	ICPAES
SR	1152		PPM	ICPAES
ZR	2		PPM	ICPAES
BA	1570		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. .