Sample VD.2

NavDat sample number 33444 · TRACHYBASALT

Sample

Sample ID	VD.2
Rock name	TRACHYBASALT
Rock type	PLUTONIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	40.03
Longitude	-105.19
Location	Valmont dike
State / province	COLORADO
Formation	valmot dike

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
64.9		62.3	67.5

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	48.3		WT%	UNKNOWN
AL2O3	16.7		WT%	UNKNOWN
TIO2	0.89		WT%	UNKNOWN
FE2O3	3.99		WT%	UNKNOWN
FEO	6.3		WT%	UNKNOWN
CAO	8.3		WT%	UNKNOWN
MGO	5.8		WT%	UNKNOWN
K2O	4.1		WT%	UNKNOWN
NA2O	3.2		WT%	UNKNOWN
P2O5	0.7		WT%	UNKNOWN
H2O_PLUS	1.7		WT%	UNKNOWN
TOTAL	99.9		WT%	UNKNOWN

References

Larson, Edwin E; Drexler, John W Early Laramide mafic to intermediate volcanism, Front Range, Colorado. Colorado School of Mines Quarterly, vol.83, no.2, pp.41-52, 1988