Sample LC81-843

NavDat sample number 61148 · DACITE

Sample

Latitude	40.4872
Longitude	-121.508
State / province	California
Volcanic field	Lassen Volcanics, Twin Lakes Sequence, Younger

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

Item	Value	Unit	Method
SIO2	59.16	WT%	WDXRF
AL2O3	18.15	WT%	WDXRF
FE2O3	1.18	WT%	WDXRF
FEO	4.26	WT%	WDXRF
FEOT	5.32	WT%	WDXRF
MGO	4.16	WT%	WDXRF
CAO	6.82	WT%	WDXRF
NA2O	3.92	WT%	WDXRF
K2O	1.49	WT%	WDXRF
TIO2	0.63	WT%	WDXRF
P2O5	0.14	WT%	WDXRF
MNO	0.09	WT%	WDXRF
LOI	0.01	WT%	LOI
TOTAL	100.21	WT%	WDXRF
MG_NUMBER	63.5		WDXRF
RB	40	PPM	EDXRF
SR	539	PPM	EDXRF
BA	448	PPM	EDXRF
Y	15	PPM	EDXRF
ZR	107	PPM	EDXRF
NB	4	PPM	EDXRF
NI	53	PPM	EDXRF
CU	36	PPM	EDXRF
ZN	38	PPM	EDXRF
CR	58	PPM	EDXRF