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Cerro La Tiza, Comerio, Puerto Rico, USAi
Regional Level Types
Cerro La TizaOccurrence
ComerioMunicipality
Puerto RicoUnincorporated Territory
USACountry

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Latitude & Longitude (WGS84):
18° 14' 39'' North , 66° 11' 3'' West
Latitude & Longitude (decimal):
18.24427,-66.18418
GRN:
N13W45
Type:
Occurrence
Köppen climate type:
Am : Tropical monsoon climate
Nearest Settlements:
PlacePopulationDistance
Comerío4,649 (2015)5.3km
Sumidero1,145 (2015)6.5km
Santa Clara1,138 (2015)6.5km
Palomas1,742 (2015)7.7km
Cidra5,067 (2015)8.0km
Mindat Locality ID:
477456
Long-form identifier:
mindat:1:2:477456:6
GUID (UUID V4):
0


Alteration: Argillic Or Propylitic

Commodity: Alunite and quartz occur As alternating bands in finely banded and crenulated rock. Kaolinite and halloysite are more abundant at the southern margin of the altered zone.

Deposit: Cerro la tiza mineralized zone covers an area of approximately 556 acres. Hosted in volcanics, with a possible small dike. This deposit lies in an altered belt which trends N 70 deg W across N central puerto rico. This belt skirts the northern edge of the san lorenzo and caguas plutons. [previos updaters and dates: starritt, bruce c., 78 08; mckelvey, g. E., 90 07.] ; info.src : 1 pub lit

Deposit type: Epithermal quartz-alunite Au

Development: Some small-scale sporadic mining for kaolin clays may have been tried locally.

Geology: Hydrothermal (acidic) alteration extensive but lacks well defined zoning pattern. Silica cap (with large boulders) on an advanced argillic zone. Limited precious metal mets, possible clay resource.

Rock formation(s): Ucret-Tert Alunitized Zone


Ore(s): East-West Zone = Fault?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


7 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Alunite
Formula: KAl3(SO4)2(OH)6
References:
USGS MRDS.
ⓘ Diaspore
Formula: AlO(OH)
References:
USGS MRDS.
ⓘ Halloysite
Formula: Al2Si2O5(OH)4 · n(H2O)
References:
USGS MRDS.
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
References:
USGS MRDS.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
References:
USGS MRDS.
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
References:
USGS MRDS.
ⓘ Pyrophyllite
Formula: Al2Si4O10(OH)2
References:
USGS MRDS.
ⓘ Quartz
Formula: SiO2
References:
USGS MRDS.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘDiaspore4.FD.10AlO(OH)
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAlunite7.BC.10KAl3(SO4)2(OH)6
Group 9 - Silicates
ⓘPyrophyllite9.EC.10Al2Si4O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘHalloysite9.ED.10Al2Si2O5(OH)4 · n(H2O)

List of minerals for each chemical element

HHydrogen
Hⓘ AluniteKAl3(SO4)2(OH)6
Hⓘ DiasporeAlO(OH)
Hⓘ HalloysiteAl2Si2O5(OH)4 · n(H2O)
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ PyrophylliteAl2Si4O10(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
OOxygen
Oⓘ AluniteKAl3(SO4)2(OH)6
Oⓘ DiasporeAlO(OH)
Oⓘ HalloysiteAl2Si2O5(OH)4 · n(H2O)
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PyrophylliteAl2Si4O10(OH)2
Oⓘ QuartzSiO2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Alⓘ AluniteKAl3(SO4)2(OH)6
Alⓘ DiasporeAlO(OH)
Alⓘ HalloysiteAl2Si2O5(OH)4 · n(H2O)
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ PyrophylliteAl2Si4O10(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ HalloysiteAl2Si2O5(OH)4 · n(H2O)
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ PyrophylliteAl2Si4O10(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sⓘ AluniteKAl3(SO4)2(OH)6
KPotassium
Kⓘ AluniteKAl3(SO4)2(OH)6
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2

Other Databases

Link to USGS MRDS:10009296

Other Regions, Features and Areas containing this locality

Caribbean PlateTectonic Plate
North America
North America Plate
The CaribbeanRegion

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