Sample Gardner Butte Plug

NavDat sample number 1440 · DIORITE

Sample

Sample ID	Gardner Butte Plug
Rock name	DIORITE
Rock type	PLUTONIC
Composition	INTERMEDIATE
Material	IGNEOUS

Location

Latitude	37.7817
Longitude	-105.145
State / province	Colorado

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
26.4		25.6	27.2

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	51.4		WT%	UNKNOWN
AL2O3	17.4		WT%	UNKNOWN
FE2O3	7.1		WT%	UNKNOWN
FEO	2.7		WT%	UNKNOWN
MGO	3.8		WT%	UNKNOWN
CAO	5.2		WT%	UNKNOWN
NA2O	3.8		WT%	UNKNOWN
K2O	2.6		WT%	UNKNOWN
H2O	3.8		WT%	UNKNOWN
TIO2	1.2		WT%	UNKNOWN
P2O5	0.7		WT%	UNKNOWN
MNO	0.2		WT%	UNKNOWN
TOTAL	100		WT%	UNKNOWN

References

Johnson, Ross B (1968) Geology of the igneous rocks of the Spanish Peaks region, Colorado. U. S. Geological Survey Professional Paper, Report: P 0594-G,pp.G1-G47, 1968