Sample 1049

NavDat sample number 12222 · TRACHYBASALT

Sample

Sample ID	1049
Rock name	TRACHYBASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS
Comment	Trachybasalt lava

Location

Latitude	29.55
Longitude	-103.833
Location	Rawls Formation, Wire Gap Road
State / province	Texas

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
32		26	38

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	48.02		WT%	XRF
TIO2	3.27		WT%	XRF
AL2O3	16.86		WT%	XRF
FE2O3	1.34		WT%	XRF
FEO	11.17		WT%	XRF
MNO	0.18		WT%	XRF
MGO	4.33		WT%	XRF
CAO	8.55		WT%	XRF
NA2O	3.88		WT%	XRF
K2O	1.76		WT%	XRF
P2O5	0.64		WT%	XRF
TOTAL	100		WT%	XRF
NI	18		PPM	MS-ID
RB	31		PPM	MS-ID
SR	893		PPM	MS-ID
Y	31		PPM	MS-ID
ZR	248		PPM	MS-ID
NB	49		PPM	MS-ID

References

Cameron, Kenneth L; Cameron, Maryellen (1986) Geochemistry of quartz-normative igneous rocks from the Chinati Mountains and Terlingua areas, West Texas; a comparison with Cenozoic volcanic rocks from Chihuahua and Baja California Sur, Mexico. Guidebook - Bureau of Economic Geology, University of Texas at Austin. 23; Pages 143-163. 1986. .