Sample WB8333

NavDat sample number 12617 · TRACHYTE

Sample

Sample ID	WB8333
Rock name	TRACHYTE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	29.7033
Longitude	-103.03
Location	West Black Hill
State / province	Texas

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
31		26	38

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	57		WT%	XRF
TIO2	0.25		WT%	XRF
AL2O3	18.2		WT%	XRF
FE2O3	5.97		WT%	XRF
FEO	0.8		WT%	XRF
MNO	0.08		WT%	XRF
MGO	0.31		WT%	XRF
CAO	2		WT%	XRF
NA2O	5.25		WT%	XRF
K2O	5.94		WT%	XRF
P2O5	0.15		WT%	XRF
CO2	0.4		WT%	XRF
TOTAL	96.04		WT%	XRF
RB	120		PPM	XRF
SR	10		PPM	XRF
ZR	860		PPM	XRF
SR87_SR86	0.70573			PER_COM

References

Dahl, David A; Lambert, David D (1986) Petrology of the Black Hills, Brewster County, Texas. Guidebook - Bureau of Economic Geology, University of Texas at Austin. 23; Pages 320-332. 1986. .