Scientific data near [18.13000,-66.96000]

Search area extends approximately 8.9 km east-west and 9.4 km north-south.

Geographic context

Counties, states, countries, continents, or oceans
Sabana Grande	municipio
Puerto Rico	territory
U.S. possessions and associated areas
North America	continent
Land	continent
Watershed boundaries (USGS hydrologic units)

Geology of Puerto Rico

Geologic units and faults from USGS Open File Report 98-38, concerning assessment of the mineral resources of Puerto Rico

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Unit	Lithology	Description
El Rayo Formation	Mixed volcanic/clastic rock	Massive, dark grayish-purple andesitic and basaltic lava with interbedded limestone. Thickness unknown. Exposed in the San German, Sabana Grande, and Punta Verraco quadrangles
Mariquita Chert	Chert	Laminated, fine-grained, dark-gray chert. Contains abundant to sparse radiolaria, and locally, Foraminifera. Locally interbedded with recrystallized and largely silicified limestone(?), and with non-metamorphosed pillowed basalt. Maximum estimated thickness, 300 m. Exposed in the Cabo Rojo, Puerto Real, San German, Parguera, and Punta Verraco quadrangles
Serpentinite	Serpentinite	Sheared light- to dark-green, serpentinite; chiefly altered harzburgite. Epiclastic serpentinite is poorly sorted, unsheared, and retains a characteristic epiclastic appearance in both clasts and matrix. Exposed in the Mayaguez, Rosario, Maricao, Sabana Grande, Yauco, Punta Verraco, Parguera, Cabo Rojo, San German, and Puerto Real quadrangles
Two pyroxene olivine basalt	Basalt	Porphyritic augite hypersthene-olivine basalt. Exposed in the Yauco, Sabana Grande, Guanica, Parguera, San German, Cabo Rojo, Mayaguez, Rosario, and Maricao quadrangles
Sabana Grande Formation	Volcanic breccia	Volcanic breccia, conglomerate, sandstone and siltstone, and minor basalt flows and limestone lenses. Minimum estimated thickness I,000 m. Exposed in the Sabana Grande, San German, Puerto Real, Mayaguez, and Rosario quadrangles
Yauco Formation	Mixed carbonate/clastic rock	Siltstone, claystone; sandstone, limestone, and conglomerate. Interbedding of the Yauco with the Maricao, Anon, and Lago Garzas, which have fossils of Tertiary age, may indicate an age spread from Tertiary to Upper Cretaceous, for the Yauco, but fossils of Tertiary age from the Yauco are not known. Estimate thickness in excess of 1,200 m. Exposed in the Yauco, Ponce, Penuelas, Adjuntas, Monte Guilarte, Maricao, San German, Sabana Grande, Rosario, Mayaguez, Puerto Real, Central La Plata, and Rincon quadrangles

Airborne geophysical surveys

Aerial surveys of magnetic anomaly and gamma ray emission; older surveys were analog record which have been digitized, newer surveys collected data in digital form.

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ID	Data type	Description
San German	M-Dz	San German 563 line km with spacing 0.40 km over parts of PR

National Geochemical Database: Rock

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"

Database Home

Sample ID	Rock type	Rock name
AF046	igneous	ultramafic
AF047
AF048	sedimentary	claystone
AF049	igneous	mafic
AF050	igneous	ultramafic
AF051	igneous	ultramafic
AF052
AF053	igneous	mafic
AF054	igneous	mafic
AF055	igneous	ultramafic
AF056	unidentified	mudstone
AF057	igneous	mafic
AF058	igneous	ultramafic
AF059	igneous	mafic
AF060	igneous	mafic
AF061	sedimentary	limestone/dolomite
AF062	igneous	ultramafic
AF063
AF064	sedimentary	claystone
AF065	igneous	mafic
AF066	sedimentary	limestone/dolomite
AF067	igneous	ultramafic
AF068
AF069	igneous	mafic
AF070	sedimentary	claystone
AF071	igneous	ultramafic
AF072
AF073	sedimentary	claystone
AF074	igneous	ultramafic
AF075	sedimentary	claystone
AF102	sedimentary	limestone/dolomite
AF103	igneous	ultramafic
AF104
AF105	igneous	mafic
AF106	unidentified
AF107	sedimentary	claystone
AF108	igneous	ultramafic
AF109
AF110
AF111	igneous	ultramafic
AF112
AF113	igneous	mafic
AF114	sedimentary	claystone
AF115	unidentified
AF116	igneous	ultramafic
AF117
AF118	igneous	mafic
AF119	unidentified
AF120	sedimentary	claystone
AF121	sedimentary	limestone/dolomite
AF122	igneous	ultramafic
AF123
AF124	igneous	mafic
AF125	unidentified
AF126	igneous	ultramafic
AF127
AF128	igneous	mafic
AF129	unidentified
AF130	sedimentary	limestone/dolomite
AF131	igneous	ultramafic
AF132
AF133	unidentified
AF134	sedimentary	claystone
AF135	sedimentary	limestone/dolomite
AF136	igneous	ultramafic
AF137
AF138	igneous	mafic
AF139	igneous	mafic
AF140	unidentified
W252852	metamorphic	serpentinite
W252853	metamorphic	serpentinite

Mineral Resource Data System

MRDS describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references.

Database Home

Site name	Development	Commodities
Maricao East	Prospect	CR CO FE NI
Maricao West	Prospect	CR CO FE NI
Unidentified Aggregate Quarry	Producer	STN_C
Maricao West and Las Tetas De Cerro Gordo West	Occurrence	NI FE CO CR
Maricao East and Las Tetas De Cerro Gordo East	Occurrence	NI FE CO CR

An index to PGE-Ni-Cr deposits and occurrences in selected mineral-occurrence databases (web-accessible database)

A compendium of references to previously published databases and database records that describe PGE, nickel, and chromium deposits and occurrences. These data show where to obtain more detailed information about each deposit or occurrence.

Database Home

Deposit name	Deposit type	Location
Rosario-Maricao Area	unclassified
Maricao East and Las Tetas De Cerro Gordo East	Occurrence	Puerto Rico, United States
Maricao West and Las Tetas De Cerro Gordo West	Occurrence	Puerto Rico, United States
Maricao East	Occurrence
Maricao West	Occurrence

National Geochemical Database: Sediment

Geochemical analysis of sediment samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
BHJ661	float/colluvium/talus	SD; utmx=100740.; utmy=29210.; float
BHJ662	float/colluvium/talus	SD; utmx=100710.; utmy=29200.; float
BHJ664	float/colluvium/talus	SD; utmx=98700.; utmy=28800.; float
BHJ665	float/colluvium/talus	SD; utmx=99680.; utmy=29040.; float
BHJ666	float/colluvium/talus	SD; utmx=99630.; utmy=29120.; float
BHJ667	float/colluvium/talus	SD; utmx=98970.; utmy=31300.; float
BHJ668	float/colluvium/talus	SD; utmx=99310.; utmy=30450.; float
BHJ669	float/colluvium/talus	SD; utmx=99490.; utmy=30010.; float
BHJ672	float/colluvium/talus	SD; utmx=97580.; utmy=29030.; float
BHJ673	float/colluvium/talus	SD; utmx=97670.; utmy=29100.; float
BHJ674	float/colluvium/talus	SD; utmx=97210.; utmy=28550.; float
BHJ675	float/colluvium/talus	SD; utmx=97620.; utmy=28560.; float
BHJ678	float/colluvium/talus	SD; utmx=92940.; utmy=30070.; float
BHJ679	float/colluvium/talus	SD; utmx=92720.; utmy=29930.; float
BHJ680	float/colluvium/talus	SD; utmx=93860.; utmy=30770.; float
BHJ681	float/colluvium/talus	SD; utmx=94920.; utmy=29660.; float
BHJ682	float/colluvium/talus	SD; utmx=94880.; utmy=29700.; float
BHJ683	float/colluvium/talus	SD; utmx=95500.; utmy=30160.; float
BHJ684	float/colluvium/talus	SD; utmx=99180.; utmy=34270.; float
BHJ685	float/colluvium/talus	SD; utmx=99270.; utmy=34350.; float
BHJ686	float/colluvium/talus	SD; utmx=99350.; utmy=34120.; float
BHJ687	float/colluvium/talus	SD; utmx=100000.; utmy=33900.; float
BHJ688	float/colluvium/talus	SD; utmx=100060.; utmy=33810.; float
BHJ689	float/colluvium/talus	SD; utmx=97420.; utmy=30030.; float
BHJ690	float/colluvium/talus	SD; utmx=97570.; utmy=30030.; float
BHJ691	float/colluvium/talus	SD; utmx=98520.; utmy=32900.; float
BHJ692	float/colluvium/talus	SD; utmx=98570.; utmy=33000.; float
BHJ693	float/colluvium/talus	SD; utmx=98720.; utmy=32710.; float
BHJ694	float/colluvium/talus	SD; utmx=98830.; utmy=32740.; float
BHJ695	float/colluvium/talus	SD; utmx=99210.; utmy=32190.; float
BHJ696	float/colluvium/talus	SD; utmx=99420.; utmy=32000.; float
BHJ697	float/colluvium/talus	SD; utmx=96050.; utmy=29910.; float
BHK115	float/colluvium/talus	SD; utmx=93290.; utmy=32425.; float
BHK134	float/colluvium/talus	SD; utmx=94800.; utmy=33800.; float
BHK135	float/colluvium/talus	SD; utmx=95375.; utmy=33475.; float
BHK188	float/colluvium/talus	SD; utmx=96100.; utmy=31320.; float
BHK206	float/colluvium/talus	SD; utmx=93520.; utmy=36700.; float
BHK207	float/colluvium/talus	SD; utmx=93390.; utmy=367100.; float
BHK239	float/colluvium/talus	SD; utmx=98970.; utmy=31500.; float
BHK241	float/colluvium/talus	SD; utmx=100000.; utmy=33900.; float
BHK242	float/colluvium/talus	SD; utmx=96050.; utmy=29910.; float
BHK244	float/colluvium/talus	SD; utmx=93390.; utmy=36710.; float
BHK255	float/colluvium/talus	SD; utmx=93290.; utmy=32425.; float
BHK258	float/colluvium/talus	SD; utmx=95375.; utmy=33475.; float
BHP051	stream/river	utmx=98860.; utmy=36030.; stream
BHP091	stream/river	utmx=97190.; utmy=36780.; stream
BHP092	stream/river	utmx=97160.; utmy=36880.; stream
BHP094	stream/river	utmx=98590.; utmy=35850.; stream
BHP095	stream/river	utmx=98710.; utmy=35850.; stream
BHP096	stream/river	utmx=98860.; utmy=36030.; stream
BHP097	stream/river	utmx=95660.; utmy=36420.; stream
BHP098	stream/river	utmx=95450.; utmy=36500.; stream
BHP099	stream/river	utmx=95450.; utmy=36390.; stream

National Geochemical Database: Soil

Geochemical analysis of soil samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

Database Home

Sample ID	Sample source	Sample notes
W252854	artificial exposure	LATERITE; road cut
W252855	artificial exposure	LATERITE; road cut
W252856	artificial exposure	LATERITE; road cut
W252857	artificial exposure	LATERITE; road cut
W252858	artificial exposure	LATERITE; road cut
W252859	artificial exposure	LATERITE; road cut
W252860	artificial exposure	LATERITE; road cut
W252861	artificial exposure	LATERITE; road cut
W252862	artificial exposure	LATERITE; road cut

Global assessment of undiscovered copper resources

Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

Database Home

Tract name	Deposit type	Geology
Santiago	porphyry copper	Cretaceous-Eocene oceanic arc associated with subduction along the northern Caribbean Plate boundary, corresponding to the modern Greater Antilles Arc

USMIN Mineral Deposit Database

A developing national-scale geospatial database that will be an authoritative source of information on the most important mines, mineral deposits, and mineral districts of the United States.

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Site name	Feature type	Commodities
West deposit	Deposit	cobalt; chromium; iron; nickel
East deposit	Deposit	cobalt; chromium; iron; nickel

Critical mineral deposits of the United States

Mineral deposit information drawn from USGS databases, industry reports, and scientific literature totalling 681 individual mineral deposits documented to contain critical minerals. Data are provided in Esri file geodatabase, Microsoft Excel, shapefile, and CSV formats.

Database Home

Deposit name	Deposit type	Critical minerals
Maricao East deposit	Nickel-cobalt laterite	cobalt, nickel
Maricao West deposit	Nickel-cobalt laterite	cobalt, nickel