Sample 21

NavDat sample number 5468 · BASALT

Sample

Sample ID	21
Rock name	BASALT
Rock type	VOLCANIC
Composition	MAFIC
Material	IGNEOUS

Location

Latitude	23.95
Longitude	-104.833
Location	Durango City
State / province	Durango
Formation	Metates Formation

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
12.2		11.3	13.9

Analyses

Whole Rock

Item	Value	Std. dev.	Unit	Method
SIO2	49.14		WT%	UNKNOWN
TIO2	2.19		WT%	UNKNOWN
AL2O3	16.86		WT%	UNKNOWN
FE2O3	5.38		WT%	UNKNOWN
FEO	5.79		WT%	UNKNOWN
MNO	0.16		WT%	UNKNOWN
MGO	3.98		WT%	UNKNOWN
CAO	6.43		WT%	UNKNOWN
NA2O	4.6		WT%	UNKNOWN
K2O	2.43		WT%	UNKNOWN
H2O_PLUS	1.17		WT%	UNKNOWN
H2O_MINUS	0.43		WT%	UNKNOWN
P2O5	1.01		WT%	UNKNOWN
CO2	0.06		WT%	UNKNOWN

References

Swanson, E R; Keizer, R P; Lyons, J I; Clabaugh, S E (1978) Tertiary volcanism and caldera development near Durango City, Sierra Madre Occidental, Mexico. Geological Society of America Bulletin, vol.89, no.7, pp.1000-1012, Jul 1978 doi:10.1130/0016-7606(1978)89<1000:TVACDN>2.0.CO;2