Sample s_1406

NavDat sample number 33821 · RHYODACITE

Sample

Sample ID	s_1406
Rock name	RHYODACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS

Location

Latitude	42.95
Longitude	-121.94
Location	CASCADES / HIGH CASCADES / NORTHWESTERN CASCADES / MOUNT MAZAMA / PACIFIC OCEAN
State / province	OREGON
Location comment	CRATER LAKE, POTHOLE BUTTE

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
0.45		0.448	0.456	QUATERNARY

Analyses

Whole rock

Item	Value	Unit	Method
SIO2	71.2	WT%	XRF
TIO2	0.42	WT%	XRF
AL2O3	14.5	WT%	XRF
FE2O3T	2.41	WT%	XRF
CAO	1.76	WT%	XRF
MGO	0.56	WT%	XRF
MNO	0.04	WT%	XRF
K2O	2.76	WT%	AES
NA2O	4.94	WT%	AES
P2O5	0.08	WT%	XRF
LOI	1.04	WT%	IGN
LA	21	PPM	INAA
CE	41	PPM	INAA
ND	18	PPM	INAA
SM	4.1	PPM	INAA
EU	0.78	PPM	INAA
TB	0.64	PPM	INAA
YB	2.2	PPM	INAA
LU	0.37	PPM	INAA
SC	6.72	PPM	INAA
CR	3.3	PPM	INAA
CO	4.3	PPM	INAA
ZN	44	PPM	INAA
RB	56	PPM	XRF
SR	237	PPM	XRF
Y	26	PPM	XRF
ZR	248	PPM	XRF
NB	5.5	PPM	ICPMS
CS	3.2	PPM	INAA
BA	875	PPM	XRF
HF	5.8	PPM	INAA
TA	0.55	PPM	INAA
TH	5.9	PPM	INAA
U	2.3	PPM	INAA
SIO2	62.8	WT%	XRF
AL2O3	23.1	WT%	XRF
FEOT	0.3	WT%	EPMA
CAO	4.67	WT%	XRF
MGO	0.02	WT%	XRF
SRO	0.11	WT%	EPMA
K2O	0.55	WT%	AES
NA2O	8.34	WT%	AES
SIO2	56.4	WT%	XRF
AL2O3	27.7	WT%	XRF
FEOT	0.33	WT%	EPMA
CAO	9.53	WT%	XRF
MGO	0.03	WT%	XRF
SRO	0.17	WT%	EPMA
K2O	0.22	WT%	AES
NA2O	5.87	WT%	AES
SIO2	52	WT%	XRF
TIO2	0.34	WT%	XRF
AL2O3	1.2	WT%	XRF
CR2O3	0.01	WT%	EPMA
FEOT	9.81	WT%	EPMA
CAO	20.4	WT%	XRF
MGO	14	WT%	XRF
MNO	0.5	WT%	XRF
NA2O	0.39	WT%	AES
WO	40.8	MOL%	EPMA
SIO2	52.6	WT%	XRF
TIO2	0.22	WT%	XRF
AL2O3	0.91	WT%	XRF
CR2O3	0.01	WT%	EPMA
FEOT	9.62	WT%	EPMA
CAO	20.8	WT%	XRF
MGO	13.8	WT%	XRF
MNO	0.48	WT%	XRF
NA2O	0.39	WT%	AES
WO	41.4	MOL%	EPMA
SIO2	52.3	WT%	XRF
TIO2	0.3	WT%	XRF
AL2O3	1.32	WT%	XRF
CR2O3	0.01	WT%	EPMA
FEOT	9.37	WT%	EPMA
CAO	21.1	WT%	XRF
MGO	14	WT%	XRF
MNO	0.45	WT%	XRF
NA2O	0.39	WT%	AES
WO	41.7	MOL%	EPMA
SIO2	52.5	WT%	XRF
TIO2	0.27	WT%	XRF
AL2O3	1.02	WT%	XRF
CR2O3	0.02	WT%	EPMA
FEOT	8.96	WT%	EPMA
CAO	21.1	WT%	XRF
MGO	14.2	WT%	XRF
MNO	0.49	WT%	XRF
NA2O	0.39	WT%	AES
WO	42	MOL%	EPMA
SIO2	52.5	WT%	XRF
TIO2	0.14	WT%	XRF
AL2O3	0.43	WT%	XRF
CR2O3	0.01	WT%	EPMA
FEOT	22.2	WT%	EPMA
CAO	0.95	WT%	XRF
MGO	21.4	WT%	XRF
MNO	1.11	WT%	XRF
NA2O	0.01	WT%	AES
WO	2	MOL%	EPMA
SIO2	52.1	WT%	XRF
TIO2	0.15	WT%	XRF
AL2O3	0.49	WT%	XRF
CR2O3	0.02	WT%	EPMA
FEOT	22.5	WT%	EPMA
CAO	1.06	WT%	XRF
MGO	21.2	WT%	XRF
MNO	1.04	WT%	XRF
NA2O	0.02	WT%	AES
WO	2.2	MOL%	EPMA
SIO2	52.9	WT%	XRF
TIO2	0.21	WT%	XRF
AL2O3	0.5	WT%	XRF
CR2O3	0.02	WT%	EPMA
FEOT	22.8	WT%	EPMA
CAO	1.02	WT%	XRF
MGO	21.4	WT%	XRF
MNO	1.03	WT%	XRF
NA2O	0.02	WT%	AES
WO	2.1	MOL%	EPMA
SIO2	52.8	WT%	XRF
TIO2	0.18	WT%	XRF
AL2O3	0.55	WT%	XRF
CR2O3	0.01	WT%	EPMA
FEOT	22.7	WT%	EPMA
CAO	1.08	WT%	XRF
MGO	21.1	WT%	XRF
MNO	1.08	WT%	XRF
NA2O	0.03	WT%	AES
WO	2.2	MOL%	EPMA

References

Nakada, Setsuya; Bacon, Charles R; Gartner, Anne E (1994) Origin of phenocrysts and compositional diversity in pre-Mazama rhyodacite lavas, Crater Lake, Oregon. Journal of Petrology. 35; 1, Pages 127-162. 1994.