Sample SM4

NavDat sample number 37522 · DACITE

Sample

Sample ID	SM4
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	plagioclase phenocrysts along with hypersthene; groundmass ranges from nearly holocrystalline comprised of small plagioclase laths to nearly holohyaline comprised of dark brown glass; disequilibrium features similar to the trachyandesites

Latitude	43.7306
Longitude	-110.545
Location	outcrop on hillside N of Ditch Creek
State / province	Wyoming

Age (Ma)	Error	Min	Max	Geologic age	Dated by
6		3	10

Item	Value	Unit	Method
SIO2	66.28	WT%	XRF
AL2O3	15.96	WT%	XRF
TIO2	0.44	WT%	XRF
FEOT	3.49	WT%	XRF
MNO	0.019	WT%	XRF
CAO	4.11	WT%	XRF
MGO	4.68	WT%	XRF
K2O	2.83	WT%	XRF
NA2O	4.11	WT%	XRF
P2O5	0.179	WT%	XRF
NI	54	PPM	XRF
CR	126	PPM	XRF
SC	13	PPM	XRF
V	66	PPM	XRF
BA	1649	PPM	XRF
RB	60	PPM	XRF
SR	636	PPM	XRF
ZR	148	PPM	XRF
Y	11	PPM	XRF
NB	5.3	PPM	XRF
GA	20	PPM	XRF
CU	15	PPM	XRF
ZN	54	PPM	XRF
PB	21	PPM	XRF
LA	14	PPM	XRF
CE	71	PPM	XRF
TH	4	PPM	XRF