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San Francisco mine, Cristalmayu valley, Cristalmayu, Cristalmayu subdistrict, Alto Chapare mining district, Chapare Province, Cochabamba, Boliviai
Regional Level Types
San Francisco mineMine
Cristalmayu valleyValley
Cristalmayu- not defined -
Cristalmayu subdistrictSubdistrict
Alto Chapare mining districtDistrict
Chapare ProvinceProvince
CochabambaDepartment
BoliviaCountry

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Key
Lock Map
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude: 16° South , 65° West (est.)
Margin of Error:~140km
Locality type:Mine


The San Francisco mine worked magnesioriebeckitic asbestos during the 1940s. Several independent workings are spread out along about 1.6km of the Cristalmayu valley, now mostly overgrown with rainforest jungle.

NB: Often given in the literature as the type locality for povondraite (formerly called "ferridravite"), but that species and its associated minerals came from the Locotal Breccia, a different rock unit a few hundred metres outside the mine.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

10 valid minerals. 2 erroneous literature entries.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Federico Ahlfeld and Jorge Muñoz Reyes (1955) Las Especies Minerales de Bolivia. (Banco Minero de Bolivia, 180 pp)
Danburite
Formula: CaB2Si2O8
Dolomite
Formula: CaMg(CO3)2
Localities:
Gypsum
Formula: CaSO4 · 2H2O
'K Feldspar'
Reference: Amer.Min. (1993) 78, 433-436
Magnesio-riebeckite
Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Localities: Reported from at least 6 localities in this region.
Reference: Federico Ahlfeld and Jorge Muñoz Reyes (1955) Las Especies Minerales de Bolivia. 180pp. (Banco Minero de Bolivia)
Magnesite
Formula: MgCO3
Reference: Amer.Min. (1993) 78, 433-436
Muscovite ?
Formula: KAl2(AlSi3O10)(OH)2
Reference: Amer.Min. (1993) 78, 433-436 (dubious ID)
Povondraite
Formula: NaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3O
Reference: (erroneously attributed to this mine in the type description)
Pyrite
Formula: FeS2
Reference: GEOBOL-PNUD, Proyecto Asbesto, March 1977.
Quartz
Formula: SiO2
Reference: Amer.Min. (1993) 78, 433-436
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: Amer.Min. (1993) 78, 433-436 (Dubious ID; more likely magnesioriebeckite)
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Amer.Min. (1993) 78, 433-436

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2
Magnesite5.AB.05MgCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Danburite9.FA.65CaB2Si2O8
Magnesio-riebeckite9.DE.25◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Muscovite ?9.EC.15KAl2(AlSi3O10)(OH)2
Povondraite ?9.CK.05NaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3O
Riebeckite ?9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
'K Feldspar'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Magnesite14.1.1.2MgCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with[Si2O7] with borate groups
Danburite56.3.1.1CaB2Si2O8
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Povondraite ?61.3.1.6NaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3O
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite ?71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'K Feldspar'-
Magnesio-riebeckite-◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Riebeckite ?-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

List of minerals for each chemical element

HHydrogen
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
H GypsumCaSO4 · 2H2O
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B DanburiteCaB2Si2O8
B PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
CCarbon
C MagnesiteMgCO3
C DolomiteCaMg(CO3)2
OOxygen
O QuartzSiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O MagnesiteMgCO3
O Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
O DolomiteCaMg(CO3)2
O DanburiteCaB2Si2O8
O GypsumCaSO4 · 2H2O
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Na PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
MgMagnesium
Mg MagnesiteMgCO3
Mg Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Mg DolomiteCaMg(CO3)2
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
AlAluminium
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Si DanburiteCaB2Si2O8
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
SSulfur
S PyriteFeS2
S GypsumCaSO4 · 2H2O
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca DolomiteCaMg(CO3)2
Ca DanburiteCaB2Si2O8
Ca GypsumCaSO4 · 2H2O
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Fe PyriteFeS2
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O

Localities in this Region
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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.
 
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