This is a geologic sample in one of the Bureau of Economic Geology's three Core Research Centers. API Number: 421051078600 Top Depth: 4100 Ft. Bottom Depth: 5000 Ft. lease_name: MONTGOMERY sample_type_name: CUTTINGS sample_category_name: Cuttings formation_name: Unknown formation_age_name: Unknown facility_name: Houston reservoir_name: OZONA operator_name: PIONEER NATURAL RES. USA, INC. state_name: Texas county_name: Crockett