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Firmeza District, Santiago de Cuba Province, Cubai
Regional Level Types
Firmeza DistrictDistrict
Santiago de Cuba ProvinceProvince
CubaCountry

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PhotosMapsSearch
07686120017271995673057.jpg
View of the Juragua iron mining area, ca. 1910.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
09621720017271995686042.jpg
View of the Juragua iron mining area, ca. 1908.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
07024570017271995707328.jpg
View of the Juragua iron mining area, ca. 1912.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
07686120017271995673057.jpg
View of the Juragua iron mining area, ca. 1910.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
09621720017271995686042.jpg
View of the Juragua iron mining area, ca. 1908.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
07024570017271995707328.jpg
View of the Juragua iron mining area, ca. 1912.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
02225830017271995818235.jpg
View of the Juragua iron mining area, ca. 1910.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
09621720017271995686042.jpg
View of the Juragua iron mining area, ca. 1908.

Juragua Iron Company Mines, Firmeza District, Santiago de Cuba Province, Cuba
Latitude & Longitude:
20° North , 75° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~117km
GRN:
N14W51
Type:
District
Mindat Locality ID:
752
Long-form identifier:
mindat:1:2:752:9
GUID (UUID V4):
0


AIME Abstract
The ore deposits at Firmeza have been worked continuously since 1884; those at Daiquiri since 1895. It is surprising, therefore, that they have not been the object of careful geologic study until quite recently. It is true that considerable attention was paid to these deposits by A. C. Spencer, in 1901, in the report on the geology of Cuba, by Hayes, Vaughan, and Spencer,l but this was only incidental to a hasty general reconnaissance of the Island. As far as the Daiquiri deposits are concerned, this gap has been filled by the appearance of the two papers by Prof. James F. Kemp2 and by Prof. Waldemar Lindgren and Clyde P. Ross respectively.3 Max Roesler, first holder of the Emmons fellowship, made a detailed study of the Firmeza deposits during the past summer [~1915], so that soon we can expect a full description of them. Consequently, there is no, demand at the present time for a description of the deposits from other sources, and that is not the purpose of this paper. The papers on Daiquiri, however, leave unsolved problems in regard to the age of the rocks of the district and certain phases of the genesis of the deposits, and it is with the hope of aiding in the solution of some of these problems that this contribution is offered. Kemp, and Lindgren and Ross agree in assigning these deposits to the type of contact metamorphic deposits. They disagree in part on the question of their localization. The deposits occur in an extensive area of diorite which includes numerous blocks of limestone, and sometimes are found in the contact zones between these blocks and the diorite, and in other instances are completely enveloped in the diorite, showing no apparent connection with the limestone.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

25 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Albite
Formula: Na(AlSi3O8)
Localities: Reported from at least 6 localities in this region.
ⓘ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Localities: Reported from at least 6 localities in this region.
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
Localities: Reported from at least 8 localities in this region.
ⓘ Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Localities: Reported from at least 8 localities in this region.
ⓘ Baryte
Formula: BaSO4
References:
www.minsocam.org
ⓘ Calcite
Formula: CaCO3
Localities: Reported from at least 6 localities in this region.
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Fluorapatite
Formula: Ca5(PO4)3F
ⓘ Hematite
Formula: Fe2O3
Localities: Reported from at least 6 localities in this region.
ⓘ Hematite var. Specularite
Formula: Fe2O3
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
Localities: Reported from at least 7 localities in this region.
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'K Feldspar'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 11 localities in this region.
ⓘ 'Manganese Oxides'
ⓘ Manganite
Formula: Mn3+O(OH)
References:
www.minsocam.org
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Copper
Formula: Cu
ⓘ Neotocite
Formula: (Mn,Fe)SiO3 · H2O (?)
References:
www.minsocam.org
ⓘ Orientite (TL)
Formula: Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O
Description: In manganese orebodies in latite and andesite tuffs, agglomerates, and limestones.
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrolusite
Formula: Mn4+O2
References:
www.minsocam.org
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
ⓘ Ranciéite
Formula: (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
ⓘ Romanèchite
Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10
References:
Jeff Weisman
ⓘ 'Scapolite'
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Todorokite
Formula: (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
ⓘ Wollastonite
Formula: Ca3(Si3O9)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘvar. Specularite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘPyrolusite4.DB.05Mn4+O2
ⓘRomanèchite4.DK.10(Ba,H2O)2(Mn4+,Mn3+)5O10
ⓘTodorokite4.DK.10(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
ⓘManganite4.FD.15Mn3+O(OH)
ⓘRanciéite4.FL.40(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘOrientite (TL)9.BJ.05Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘNeotocite9.ED.20(Mn,Fe)SiO3 · H2O (?)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘvar. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Scapolite'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'K Feldspar'-
ⓘ'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ ManganiteMn3+O(OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Hⓘ OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
Hⓘ Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Hⓘ Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Hⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ BaryteBaSO4
Oⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ CalciteCaCO3
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ HematiteFe2O3
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ ManganiteMn3+O(OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Oⓘ OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Oⓘ Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ Hematite var. SpeculariteFe2O3
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fⓘ FluorapatiteCa5(PO4)3F
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Siⓘ OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
Siⓘ QuartzSiO2
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ FluorapatiteCa5(PO4)3F
SSulfur
Sⓘ BaryteBaSO4
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
ClChlorine
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
Caⓘ Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
TiTitanium
Tiⓘ TitaniteCaTi(SiO4)O
MnManganese
Mnⓘ ManganiteMn3+O(OH)
Mnⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Mnⓘ OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
Mnⓘ PyrolusiteMn4+O2
Mnⓘ Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Mnⓘ Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Mnⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ ChalcopyriteCuFeS2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Neotocite(Mn,Fe)SiO3 · H2O (?)
Feⓘ PyriteFeS2
Feⓘ Hematite var. SpeculariteFe2O3
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ Native CopperCu
SrStrontium
Srⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
BaBarium
Baⓘ BaryteBaSO4
Baⓘ Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Baⓘ Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O

Localities in this Region

Cuba
Cuba

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
The CaribbeanRegion

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