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Piedra Parada (Piedras Parado), Tatatila Municipality, Veracruz, Mexicoi
Regional Level Types
Piedra Parada (Piedras Parado)- not defined -
Tatatila MunicipalityMunicipality
VeracruzState
MexicoCountry

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Key
Latitude & Longitude (WGS84):
19° 42' 50'' North , 97° 3' 47'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Piedra Parada468 (2018)0.0km
Ermita221 (2014)1.7km
Omeapa295 (2013)3.5km
Pilhuatepec353 (2013)3.5km
La Pahua155 (2014)3.6km


Many texts refer to this locality being in Mun. Las Vigas de Ramírez (formerly Mun. de Profesor Rafael Ramírez) but this is the town where the miners live some ways from the actual mining area in and around Piedra Parada (standing stone).

There are several parts to this large skarn/ore system...pegmatites in the intrusion, amethyst and garnets in the contact skarn zone and sulfides elsewhere in the skarn and peripheral skarn zones. The buyers and sellers of the amethyst almost never know exactly where something is from.

Recently (2016-2018), a number of decent specimens have been recovered from pegmatites in the intrusions that caused the skarn where the garnets and amethysts are found. Plates of orthoclase and albite with smoky quartz crystals to 8 cm have emerged, some coated or studded with a variety of zeolites including orange stilbite-Na, colorless stellerite, laumontite clinoptilolite-K, and heulandite-Ca. Locally titanite crystals to 5 mm have been found.

See comments at http://www.mindat.org/mesg-7-99316.html

Jim McGlasson did the identifications by Raman on Peter Megaw specimens.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

16 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: James McGasson, 2018 on Peter Megaw specimens
Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: Jordi Fabre photo
Andradite var: Demantoid
Formula: Ca3Fe3+2(SiO4)3
Reference: Mineralogical Record Special Issue III, Nov.-Dec. 2003, Volume 34, No. 6 http://www.gia.edu/gems-gemology/winter-2015-gemnews-mexican-demantoid-new-deposits
Andradite var: Topazolite
Formula: Ca3Fe3+2(SiO4)3
Reference: Jordi Fabre photo
'Andradite-Grossular Series'
Reference: Jordi Fabre photo
Aragonite
Formula: CaCO3
Reference: James McGasson, 2018 on Peter Megaw specimens
Baryte
Formula: BaSO4
Reference: Dana Slaughter Minerals Collection;
Calcite
Formula: CaCO3
Reference: Dana Slaughter Minerals Collection;
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: James McGasson, 2018 on Peter Megaw specimens
Clinoclase
Formula: Cu3(AsO4)(OH)3
Reference: James McGasson, 2018 on Peter Megaw specimens
Clinoptilolite-K
Formula: K6(Si30Al6)O72·20H2O
Reference: James McGasson, 2018 on Peter Megaw specimens
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Heulandite-Ca
Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: James McGasson, 2018 on Peter Megaw specimens
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Orthoclase
Formula: K(AlSi3O8)
Reference: James McGasson, 2018 on Peter Megaw specimens
Quartz
Formula: SiO2
Quartz var: Amethyst
Formula: SiO2
Reference: [www.johnbetts-fineminerals.com]
Quartz var: Sceptre Quartz
Formula: SiO2
Reference: JR Montgomery Collection
Stellerite
Formula: Ca4(Si28Al8)O72 · 28H2O
Reference: James McGasson, 2018 on Peter Megaw specimens
Stilbite-Na
Formula: (Na,Ca,K)6-7[Al8Si28O72] · nH2O
Reference: James McGasson, 2018 on Peter Megaw specimens
Titanite
Formula: CaTi(SiO4)O
Reference: James McGasson, 2018 on Peter Megaw specimens
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: James McGasson, 2018 on Peter Megaw specimens

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Sceptre Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
Clinoclase8.BE.20Cu3(AsO4)(OH)3
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Andradite9.AD.25Ca3Fe3+2(SiO4)3
var: Demantoid9.AD.25Ca3Fe3+2(SiO4)3
var: Topazolite9.AD.25Ca3Fe3+2(SiO4)3
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Clinoptilolite-K9.GE.05K6(Si30Al6)O72·20H2O
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Heulandite-Ca9.GE.05(Ca,Na)5(Si27Al9)O72 · 26H2O
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Orthoclase9.FA.30K(AlSi3O8)
Stellerite9.GE.15Ca4(Si28Al8)O72 · 28H2O
Stilbite-Na9.GE.10(Na,Ca,K)6-7[Al8Si28O72] · nH2O
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Andradite-Grossular Series'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)3(XO4)Zq
Clinoclase41.3.1.1Cu3(AsO4)(OH)3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Orthoclase76.1.1.1K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Heulandite-Ca77.1.4.1(Ca,Na)5(Si27Al9)O72 · 26H2O
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Stellerite77.1.4.4Ca4(Si28Al8)O72 · 28H2O
Unclassified Minerals, Mixtures, etc.
Andradite
var: Demantoid
-Ca3Fe3+2(SiO4)3
var: Topazolite-Ca3Fe3+2(SiO4)3
'Andradite-Grossular Series'-
Aragonite-CaCO3
Clinoptilolite-K-K6(Si30Al6)O72·20H2O
Quartz
var: Amethyst
-SiO2
var: Sceptre Quartz-SiO2
Stilbite-Na-(Na,Ca,K)6-7[Al8Si28O72] · nH2O
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H LaumontiteCaAl2Si4O12 · 4H2O
H Clinoptilolite-KK6(Si30Al6)O72·20H2O
H ClinoclaseCu3(AsO4)(OH)3
H Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
H StelleriteCa4(Si28Al8)O72 · 28H2O
BBoron
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
CCarbon
C CalciteCaCO3
C AragoniteCaCO3
OOxygen
O Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
O Quartz (var: Amethyst)SiO2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O QuartzSiO2
O Andradite (var: Topazolite)Ca3Fe23+(SiO4)3
O AndraditeCa3Fe23+(SiO4)3
O BaryteBaSO4
O LaumontiteCaAl2Si4O12 · 4H2O
O CalciteCaCO3
O TitaniteCaTi(SiO4)O
O Clinoptilolite-KK6(Si30Al6)O72·20H2O
O ClinoclaseCu3(AsO4)(OH)3
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O AragoniteCaCO3
O OrthoclaseK(AlSi3O8)
O AlbiteNa(AlSi3O8)
O Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
O StelleriteCa4(Si28Al8)O72 · 28H2O
O Quartz (var: Sceptre Quartz)SiO2
NaSodium
Na Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
Na AlbiteNa(AlSi3O8)
Na Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al LaumontiteCaAl2Si4O12 · 4H2O
Al Clinoptilolite-KK6(Si30Al6)O72·20H2O
Al Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al OrthoclaseK(AlSi3O8)
Al AlbiteNa(AlSi3O8)
Al Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Al StelleriteCa4(Si28Al8)O72 · 28H2O
SiSilicon
Si Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
Si Quartz (var: Amethyst)SiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
Si Andradite (var: Topazolite)Ca3Fe23+(SiO4)3
Si AndraditeCa3Fe23+(SiO4)3
Si LaumontiteCaAl2Si4O12 · 4H2O
Si TitaniteCaTi(SiO4)O
Si Clinoptilolite-KK6(Si30Al6)O72·20H2O
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si OrthoclaseK(AlSi3O8)
Si AlbiteNa(AlSi3O8)
Si Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Si StelleriteCa4(Si28Al8)O72 · 28H2O
Si Quartz (var: Sceptre Quartz)SiO2
SSulfur
S BaryteBaSO4
KPotassium
K Clinoptilolite-KK6(Si30Al6)O72·20H2O
K Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Andradite (var: Topazolite)Ca3Fe23+(SiO4)3
Ca AndraditeCa3Fe23+(SiO4)3
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca CalciteCaCO3
Ca TitaniteCaTi(SiO4)O
Ca Stilbite-Na(Na,Ca,K)6-7[Al8Si28O72] · nH2O
Ca AragoniteCaCO3
Ca Heulandite-Ca(Ca,Na)5(Si27Al9)O72 · 26H2O
Ca StelleriteCa4(Si28Al8)O72 · 28H2O
TiTitanium
Ti TitaniteCaTi(SiO4)O
FeIron
Fe Andradite (var: Demantoid)Ca3Fe23+(SiO4)3
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Andradite (var: Topazolite)Ca3Fe23+(SiO4)3
Fe AndraditeCa3Fe23+(SiO4)3
CuCopper
Cu ClinoclaseCu3(AsO4)(OH)3
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
AsArsenic
As ClinoclaseCu3(AsO4)(OH)3
BaBarium
Ba BaryteBaSO4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mineralogical Record (2003) 34, 55-67, 91 [incorrect reference? Volume 34, Issue 1 of The Mineralogical Record is "Indian Zeolites and Related Species"?]

Localities in this Region


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