Sample ZA7

NavDat sample number 29263 · DACITE

Sample

Sample ID	ZA7
Alternate ID	365
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	Instituto de Geologia, UNAM Mexico

Location

Latitude	20.93
Longitude	-100.175
Location	V. Zamorano
State / province	Guanajuato

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
9.25		7.5	11

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	64.63		WT%	UNKNOWN
TIO2	0.9		WT%	UNKNOWN
AL2O3	18.23		WT%	UNKNOWN
FEOT	4.45		WT%	UNKNOWN
MNO	0.09		WT%	UNKNOWN
MGO	2		WT%	UNKNOWN
CAO	4.77		WT%	UNKNOWN
NA2O	1.66		WT%	UNKNOWN
K2O	1.75		WT%	UNKNOWN
P2O5	0.1		WT%	UNKNOWN
H2O_PLUS	0.57		WT%	UNKNOWN
H2O_MINUS	0.33		WT%	UNKNOWN
TOTAL	99.48		WT%	UNKNOWN

References

Carrasco, Nunez Gerardo; Milan, Marcos; Verma, Surendra P (1989) Geologia del Volcan Zamorano, Estado de Queretaro. Revista - Instituto de Geologia. 8; 2, Pages 195-201. 1989.