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Jackson Crossroads Amethyst Mine (JXR Amethyst Mine), Jacksons Crossroads, Wilkes Co., Georgia, USAi
Regional Level Types
Jackson Crossroads Amethyst Mine (JXR Amethyst Mine)Mine (Active)
Jacksons CrossroadsHamlet
Wilkes Co.County
GeorgiaState
USACountry

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Latitude & Longitude (WGS84): 33° 53' 12'' North , 82° 51' 25'' West
Latitude & Longitude (decimal): 33.88694,-82.85722
GeoHash:G#: dnj0f8cjy
Locality type:Mine (Active) - last checked 2017
Köppen climate type:Cfa : Humid subtropical climate


A semiprecious gemstone occurrence/mine located 1.2 km (0.7 mile) WSW of Jacksons Crossroads, few hundred yards North of Clifford Grove Church.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Jackson Crossroads Mine, Wilkes County, Georgia

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Habit: Scalenohedrons to 1 cm tall
Colour: Yellow
Description: Calcite scalenohedra found in open cavities in association with amethyst and rarely lokkaite-(Y)
Reference: Julian Gray
Lepidocrocite
Formula: γ-Fe3+O(OH)
Reference: ex. Terry Ledford Collection specimen containing single strand of red Lepidocrocite.
Lokkaite-(Y)
Formula: Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
Habit: Occurs in as white spherical aggregates to 1 mm diameter.
Colour: White
Description: Lokkaite-(Y) occurs in cavities in association with calcite.
Reference: Julian Gray
Quartz
Formula: SiO2
Reference: Van King
Quartz var: Amethyst
Formula: SiO2
Reference: Min Rec 36:3 pp 288-289 [www.johnbetts-fineminerals.com]

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Lepidocrocite4.FE.15γ-Fe3+O(OH)
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Lokkaite-(Y)5.CC.15Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O

List of minerals arranged by Dana 8th Edition classification

Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Lepidocrocite6.1.2.2γ-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 15 - HYDRATED NORMAL CARBONATES
AmBn(XO3)p·xH2O, with (m+n):p < 1:1
Lokkaite-(Y)15.4.4.1Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
var: Amethyst-SiO2

List of minerals for each chemical element

HHydrogen
H Lepidocrociteγ-Fe3+O(OH)
H Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
CCarbon
C CalciteCaCO3
C Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
OOxygen
O Quartz (var: Amethyst)SiO2
O CalciteCaCO3
O Lepidocrociteγ-Fe3+O(OH)
O Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
O QuartzSiO2
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si QuartzSiO2
CaCalcium
Ca CalciteCaCO3
Ca Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
FeIron
Fe Lepidocrociteγ-Fe3+O(OH)
YYttrium
Y Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
NdNeodymium
Nd Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
GdGadolinium
Gd Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
DyDysprosium
Dy Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleozoic - Precambrian
251.902 - 4000 Ma



ID: 2795839
Metadacite

Age: Eoarchean to Triassic (251.902 - 4000 Ma)

Comments: Original map source: Georgia Geological Survey, A branch of the Environmental Protection Division of the Georgia Department of Natural Resources, 1999 (updated Oct, 2000), Digital Geologic Map of Georgia (ver 2), scale 1:500,000.

Lithology: Major:{metadacite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Devonian - Silurian
358.9 - 443.8 Ma



ID: 3185468
Paleozoic intrusive rocks

Age: Paleozoic (358.9 - 443.8 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mineralogical Record (2005): 36(3): 288-289.
White, J.S. (2013) Mineral Mysteries: The Jacksons Crossroads Enigma, Wilkes County, Georgia. Rocks & Minerals, 88:5, 476-479. [DOI: 10.1080/00357529.2013.809997].
Merkel, I.S. (2015) Collector's Note: Lilac-Colored Amethyst “Flowers” and Other New Finds from Jacksons Crossroads, Wilkes County, Georgia. Rocks & Minerals 90:5, pages 454-458.

External Links



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