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