Sample LC84-472

NavDat sample number 61240 · RHYODACITE

Sample

Latitude	40.4898
Longitude	-121.548
State / province	California
Volcanic field	Lassen Volcanics, Bumpass Sequence

Age (Ma)	Error	Min	Max	Geologic age	Dated by
2.65		0	5.3

Item	Value	Unit	Method
SIO2	54.86	WT%	WDXRF
AL2O3	19.69	WT%	WDXRF
FE2O3	1.55	WT%	WDXRF
FEO	5.58	WT%	WDXRF
FEOT	6.98	WT%	WDXRF
MGO	3.95	WT%	WDXRF
CAO	8.47	WT%	WDXRF
NA2O	3.65	WT%	WDXRF
K2O	1.15	WT%	WDXRF
TIO2	0.83	WT%	WDXRF
P2O5	0.15	WT%	WDXRF
MNO	0.11	WT%	WDXRF
LOI	1.31	WT%	LOI
TOTAL	98.12	WT%	WDXRF
MG_NUMBER	55.8		WDXRF
RB	27	PPM	EDXRF
SR	690	PPM	EDXRF
BA	279	PPM	EDXRF
Y	18	PPM	EDXRF
ZR	103	PPM	EDXRF
NB	1	PPM	EDXRF