Sample OM356

NavDat sample number 18466 · TUFF

Sample

Sample ID	OM356
Rock name	TUFF
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	32.25
Longitude	-106.567
Location	Pena Blanca
State / province	New Mexico
Formation	Tcu

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
33		34.4	31.6

Analyses

Sanidine

Item	Value	Std. dev.	Unit	Method
SIO2	67.19		WT%	ICP
AL2O3	18.38		WT%	ICP
FE2O3	0.37		WT%	ICP
MGO	0		WT%	ICP
CAO	0.15		WT%	ICP
NA2O	6.47		WT%	ICP
K2O	7.27		WT%	ICP
TIO2	0.01		WT%	ICP
MNO	0		WT%	ICP

References

Fitzpatrick, Delane Patricia (1990) Petrology of the Cueva Tuff and the Alkali Feldspar Granite Facies of the Organ Needle Pluton, Organ Mountains, Southern New Mexico.