Mine detail: Neptune Group

Previously called 'Neptuno, Bonanza Group, Neptune-EdenVein Names: Atlas, Foundling, Neblina, Elefante Blanco, Lona Nueva,Neptune, Nugget, Washington, Guatuza, Tesoro, Toboba, Venus,Marsa ?, Bonanza'

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Location: Nicaragua, North America
Lat / long: 14.03422, -84.58326
dep_id: 10073109
mrds_id: W018936
Commodity type: metallic
Major mineral: Zinc, Copper, Lead
Minor mineral: Silver, Gold
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Producer
ore: Chalcopyrite, Galena, Gold
gangue: Chlorite, Pyrite, Quartz
work_type: Surface/Underground
alteration: Slight Wallrock Replacement, Alteration Abundant
conc_proc: More Base Metals In Sw End Of District, More Gold To Ne. See Individual Descriptions.
ore_ctrl: Faults; Ore Shoots Often In Vein Junctions And Branch Points; Second Enrichment In Oxide Zone (50-100 M)
Reporter: Schruben, Paul G., Page, Norman J., Venable, Margaret
hrock_unit: Metagalpa;Basement;Basement
hrock_type: Shale,Siltstone,Limestone
arock_type: Diorite
Structure: Three Upthrown Blocks With Veins Separated By Two Downthrown Blocks; E-W Dip-Slip Faults With Small To Moderate Horizontal Displacement; Paleocaldera Structures?
tectonic: Chortis Block, Central Nicaragua Uplift
References:
  • Deposit:: ROBERTS, R.J., IRVING, E.M., 1957, MINERAL DEPOSITS OF CENTRAL AMERICA, U.S. GEOLOGICAL SURVEY BULL. 1034, P. 187-188
  • Reserve-Resource:: MINING ANNUAL REVIEW, 1976, P. 355.
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