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Hemco Property, North Caribbean Coast Autonomous Region, Nicaraguai
Regional Level Types
Hemco PropertyProject
North Caribbean Coast Autonomous RegionAutonomous Region
NicaraguaCountry

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Latitude & Longitude:
14° North , 83° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~195km
GRN:
N10W57
Type:
Project
Mindat Locality ID:
437541
Long-form identifier:
mindat:1:2:437541:1
GUID (UUID V4):
0


The Hemco Property includes the producing Panama gold mine (Panama Mine or Panama, including Panama, Elefante, Toboba, Tesoro, Neblina, Pluto, Neptuno, and Capitan veins), the development-stage Pioneer gold mine (Pioneer Mine or Pioneer), the pre-development-stage Porvenir polymetallic deposit(Porvenir Project or Porvenir), the Leticia and San Antonio polymetallic deposits (Leticia and San Antonio), and a large number of artisanal operations (artisanal areas).

The Hemco Property consists of two non-contiguous, irregularly shaped blocks of mining concessions that extend for approximately 70 km in an east-west direction and approximately 100 km in a north-south direction. The centre of the Hemco Property is located at approximately 1,553,116mN and 760,885mE (WGS84 Zone 16).

Southern half of the Chortis Block in the Mesquito Composite Oceanic Terrane of Late Triassic to Early Cretaceous age.

The majority of mineralization within the concession area consists of volcanic hosted gold-silver + copper, lead, and zinc epithermal quartz veins of intermediate sulphidation type. There is a vertical zonation of metals and base metal grades are higher at depth, although, in general, gold grades appear to stay constant.
In addition to these epithermal quartz veins, there are several alluvial gold deposits derived from weathering of the mineralized veins.

Epithermal gold and silver deposits of both vein and bulk-tonnage styles are classified as high-sulphidation(HS), intermediate-sulphidation (IS), and low-sulphidation (LS) types based on the sulphidation states of their hypogene sulphide assemblages.

The mining concessions of the Hemco property straddle three municipalities: Bonanza, Siuna and Rosita plus a separate northern concession in Waspan municipality.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

8 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Chrysotile
Formula: Mg3(Si2O5)(OH)4
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Lizardite
Formula: Mg3(Si2O5)(OH)4
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘLizardite9.ED.15Mg3(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ LizarditeMg3(Si2O5)(OH)4
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ DolomiteCaMg(CO3)2
Oⓘ LizarditeMg3(Si2O5)(OH)4
Oⓘ MagnesiteMgCO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ LizarditeMg3(Si2O5)(OH)4
Mgⓘ MagnesiteMgCO3
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ LizarditeMg3(Si2O5)(OH)4
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MagnetiteFe2+Fe23+O4

Localities in this Region

Nicaragua

Other Regions, Features and Areas that Intersect

North America
North America Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Salari, David J., Eng, P, Yungang Wu (2021) NI 43-101 Technical Report on the Hemco Property, Región Autónoma de la Costa Caribe Norte, Nicaragua SLR Project No: 233.03343.R0000.
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