Sample 83

NavDat sample number 20607 · VOGESITE

Sample

Sample ID	83
Rock name	VOGESITE
Rock type	VOLCANIC
Composition	EXOTIC
Material	IGNEOUS
Comment	medium porphyritic; phenocrysts of pyroxene prisms, amphibole needles, scattered neeldes of apatite and grains of magnetite; groundmass is holocrystalline hypautomorphic granular; composed of Na orthoclase laths, diopside, hexagons of magnetite; also grains of hornblende, apatite, sphene, biotite, and analcite

Location

Latitude	42.7649
Longitude	-107.305
Location	Rattlesnake Hills
State / province	Wyoming

Age

Age (Ma)	Error	Min	Max	Geologic age	Dated by
38		32	44

Analyses

Whole rock

Item	Value	Std. dev.	Unit	Method
SIO2	52.32		WT%	UNKNOWN
AL2O3	15.8		WT%	UNKNOWN
FE2O3	4.85		WT%	UNKNOWN
FEO	3.14		WT%	UNKNOWN
MGO	4.06		WT%	UNKNOWN
CAO	6.04		WT%	UNKNOWN
NA2O	3.24		WT%	UNKNOWN
K2O	4.62		WT%	UNKNOWN
H2O_PLUS	2.04		WT%	UNKNOWN
H2O_MINUS	1.73		WT%	UNKNOWN
TIO2	0.82		WT%	UNKNOWN
P2O5	0.34		WT%	UNKNOWN
MNO	0.19		WT%	UNKNOWN
CO2	0.76		WT%	UNKNOWN
SO3	0.12		WT%	UNKNOWN
TOTAL	100.08		WT%	UNKNOWN
FEOT	7.51		WT%	UNKNOWN

References

Carey, Byrl D, Jr (1959)