Database fields in category Site characteristics

Label	Statistics	Description
`OPER_TYPE`		Type of operation existing or proposed at the site.
`DEP_TYPE`		General type of deposit or resource present at the site.
`PROD_SIZE`		A broad characterization of the magnitude of production at the site.
`DEV_STAT`		Status of development of the resource or operation.
`ORE`		Name of the ore mineral or material found in this deposit.
`GANGUE`		Name of the gangue mineral or material found in this deposit.
`OTHER_MATL`		Name of other minerals or materials found in this deposit.
`OREBODY_FM`		Form and shape of the ore body.
`WORK_TYPE`		General type of workings at the site.
`MODEL`		Mineral deposit models that characterize the site. Multiple models are delimited by braces, with a model number for each.
`ALTERATION`		Geochemical alteration, if any, believed to have been important in forming or modifying the ore materials of a deposit.
`CONC_PROC`		Geological processes that are believed to have occurred to concentrate ore materials in the deposit
`PREV_NAME`		Names by which the site or operation has bee known in the past.
`ORE_CTRL`		Geologic features, typically structural, that exert control over the form, extent, or character of the deposit.
`REPORTER`		Names of the persons primarily responsible for entering information about the site.
`HROCK_UNIT`		Lithologic and stratigraphic information regarding the host rocks for the ore deposit
`HROCK_TYPE`		Controlled term(s) indicating the type of host rocks, taken from Lithclass 6.2
`AROCK_UNIT`		Lithologic and stratigraphic information regarding the rocks for the ore deposit that are not specifically identified as host ro
`AROCK_TYPE`		Controlled term(s) indicating the type of associated rocks, taken from Lithclass 6.2
`STRUCTURE`		Description of geological structures at or near the deposit.
`TECTONIC`		Description of tectonic setting within which the deposit is found, includes regional geologic structure.
`REF`		Bibliographic references providing information supporting the database record. Braces delimit multiple references.
`YFP_BA`		Value < indicates production first began before the year specified in YR_FST_PRD; > indicates production began after that year.
`YR_FST_PRD`		Year of first production at the site. May be modified by YFP_BA.
`YLP_BA`		Value < indicates production ended before the year specified in YR_LST_PRD; > indicates production ended after that year.
`YR_LST_PRD`		Year of last production at the site. May be modified by YLP_BA.
`DY_BA`		If present, < in this field indicates that discovery occurred prior to the value in DISC_YR; likewise > indicates discovery occu
`DISC_YR`		Year the site was discovered. The value of DY_BA may modify the meaning of this value.
`PROD_YRS`		Description of the production history, including breaks or interruptions between first and last production years.
`DISCR`		Name and address (if known) of the company, organization, or person most closely associated with the discovery of the resource.