| PROPOSED
TEMPLATE FOR SOURCING QUARRIED VOLCANIC SPECIMENS
|
|
| SAMPLE ID
|
|
| SOURCE OF
INFORMATION
|
|
| Publication
|
|
|
|
|
|
|
| Personal communication(Name,
address, date):
|
|
|
| LOCATION
|
|
|
|
State
|
|
County
|
|
Town
|
|
|
|
Lattitude
|
|
Longitude
|
|
Local geographic
setting
|
|
|
|
| GEOLOGIC
SETTING
|
|
|
|
Geologic Unit
|
|
Geologic Member
|
|
|
|
Geologic
Occurrence (e.g.,lava flow,ash-flow, welded tuff, dike, sill, etc.)
|
|
|
|
Unknown
|
|
|
|
Rock Type (e.g.
rhyolite, dacite, andesite, basalt,etc.)
|
|
|
|
Uncertain
|
|
|
|
Archaeological
Name (e.g., Mt.Jasper Rhyolite, etc.)
|
|
|
|
| MACROSCOPIC
DESCRIPTION
|
|
| Fresh, unaltered surface
|
|
|
|
Color:
|
|
(if heterogeneous)
|
|
|
|
Munsell color
code:
|
|
(if hererogeneous)
|
| Altered surface
|
|
|
|
|
Color
|
|
(if heterogeneous)
|
|
|
|
Munsell color
code
|
|
(if heterogeneous)
|
| Fracture habit
|
|
|
|
Conchoidal
|
|
|
|
Subconchoidal
|
|
|
|
Splintery
|
|
|
|
Hackly
|
|
|
|
Planar
|
|
|
|
Irregular
|
|
| MACROSCOPIC
DESCRIPTION
|
PETROGRAPHIC
DESCRIPTION
|
|
| General
|
|
General
|
|
|
|
Uniform
|
|
Uniform
|
|
|
|
Inequigranular
|
|
Inequigranular
|
|
|
|
Porphytic
|
|
Porphyritic
|
|
|
|
Glomeroporphyritic
|
|
Glomeroporphyritic
|
|
|
|
Banded
|
|
Banded
|
|
|
|
Trachytic
|
|
Trachytic
|
|
|
|
Ophitic
|
|
Ophitic
|
|
|
|
Mottled
|
|
Mottled
|
|
|
|
Speckled
|
|
Speckled
|
|
|
|
Veined
|
|
Veined
|
|
|
|
Crystallinity
|
|
|
|
Holocrystalline
|
|
|
|
Hypocrystalline
|
|
|
|
Holohyaline
|
|
|
|
| MACROSCOPIC
DESCRIPTION
|
PETROGRAPHIC
DESCRIPTION
|
|
|
|
| Grain Size
|
|
Grain Size
|
|
|
|
Phaneritic
|
|
Phaneritic
|
|
|
|
Pegmatitic (>20
mm)
|
|
Pegmatitic
(>20 mm)
|
|
|
Coarse-grained (5-20
mm)
|
|
Coarse-grained(5-20
mm)
|
|
|
|
Medium-grained (1-5
mm)
|
|
Medium-grained(1-5
mm)
|
|
|
|
Fine-grained (<1
mm)
|
|
Fine-grained
(<1 mm)
|
|
|
|
| Phenocrysts
|
|
Phenocrysts
|
|
| Shape
|
|
Shape
|
|
|
|
Euhedral
|
|
Euhedral
|
|
|
|
Subhedral
|
|
Subhedral
|
|
|
|
Anhedral
|
|
Anhedral
|
|
|
|
Equant
|
|
Equant
|
|
|
|
Tabular
|
|
Tabular
|
|
|
|
Prismatic
|
|
Prismatic
|
|
|
|
Acicular
|
|
Aciculr
|
|
|
|
Irregular
|
|
Irregular
|
|
| Mineralogy
|
|
Mineralogy
|
|
|
|
Quartz
|
|
Quartz
|
|
|
|
Color
|
|
Color
|
|
|
|
Max.grain size
(mm)
|
|
|
Estim.abundance
(vol.%)
|
|
|
|
Feldspar
|
|
Feldspar
|
|
|
|
Color
|
|
Variety
|
|
|
Twin type
|
|
|
Max.grain size
(mm)
|
|
|
Estim. abundance
(vol.%)
|
|
|
|
Mafic mineral
|
|
Mafic mineral
|
|
|
|
Color
|
|
Color
|
|
|
|
Max.grain size
(mm)
|
|
|
Estim.abundance
(vol.%)
|
|
|
|
Other
|
|
|
|
Color
|
|
|
|
Max.grain size
(mm)
|
|
|
Estim.abundance
(vol.%)
|
|
|
|
Matrix
|
|
|
|
Devitification
texture
|
|
|
|
Max. grain
size (mm)
|
|
|
|
Mineralogy
|
|
|
|
Quartz
|
|
|
|
Felspar
|
|
|
|
Biotite
|
|
|
|
Sphene
|
|
Variety
|
|
|
Mafic mineral
|
|
|
|
Opaque mineral
|
|
|
|
Secondary
Minerals
|
|
|
|
Sericite
|
|
|
|
Calcite
|
|
|
|
Epidote
|
|
|
|
Chlorite
|
|
|
|
|
|
| MACROSCOPIC
DESCRIPTION
|
PETROGRAPHIC
DESCRIPTION
|
|
|
|
| Structures
|
|
Structures
|
|
|
|
Vesicular
|
|
Vesicular
|
|
Vesicle filling
|
|
|
Amygdaloidal
|
|
Amygdaloidal
|
|
|
|
Miarolitic
|
|
Miarolitic
|
|
|
|
Perlitic
|
|
Perlitic
|
|
|
|
Banded
|
|
Banded
|
|
|
|
Spherulitic
|
|
Spherulitic
|
|
|
|
Lithophsae
|
|
Lithophysae
|
|
|
|
Eutaxitic
|
|
Eutaxitic
|
|
| Pyroclastic
features
|
|
Pyroclastic features
|
|
|
|
Lithic clasts
|
|
Lithic clasts
|
|
|
|
Relict glass shards
|
|
volcanic
|
|
|
|
Fiamme
|
|
plutonic
|
|
|
|
Other
|
|
sedimentary
|
|
|
|
metamorphic
|
|
|
|
Relict glass shards
|
|
|
|
Fiamme
|
|
|
|
| GEOCHEMISTRY
|
|
| Major Elements
(wt.%)
|
|
| Analytical
Method
|
|
|
|
|
|
XRF
|
|
Neutron Activation
|
|
|
|
ICP
|
|
AA
|
|
Other
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of analyses
(range of concentrations given for more than single analysis)
|
|
|
|
|
|
|
|
|
|
|
|
|
Na2O
|
|
|
CaO
|
|
|
|
|
|
MgO
|
|
|
TiO2
|
|
|
|
|
|
Al2O3
|
|
|
K2O
|
|
|
|
|
|
SiO2
|
|
|
MnO
|
|
|
|
|
|
P2O5
|
|
|
tot.Fe + Fe2O3
|
|
| Trace Elements
(ppm)
|
|
|
|
|
|
|
| Analytical
Method
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
XRF
|
|
Neutron Activation
|
|
|
|
|
|
ICP
|
|
AA
|
|
Other
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of analyses
(range of concentrations given for more than single analysis)
|
|
|
|
|
|
|
|
|
|
|
|
|
Ba
|
|
La
|
|
Ce
|
|
|
|
|
Rb
|
|
Sr
|
|
Zr
|
|
|
|
|
Y
|
|
Nb
|
|
Zn
|
|