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Amelia Co., Virginia, USA

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Mine owner Sam Dunaway with pegmatite

Morefield Mine, Winterham, Amelia Co., Virginia, USA
Face of vertical pegmatite before diabase dike

Morefield Mine, Winterham, Amelia Co., Virginia, USA
Mine owner Sam Dunaway with pegmatite

Morefield Mine, Winterham, Amelia Co., Virginia, USA
Face of vertical pegmatite before diabase dike

Morefield Mine, Winterham, Amelia Co., Virginia, USA
 
Location is approximate, based on center of defined region.
 
Latitude & Longitude (WGS84): 37° 20' 9'' North , 77° 58' 34'' West
Latitude & Longitude (decimal): 37.33603,-77.97614
Neighbouring regions:


Note: The geographic coordinates presented are taken from the Amelia Court House topo map (GNIS database preferred). The USGS GNIS database presents 13 sets of coordinates for this county.

Mineral List

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

Albite

var: Andesine

var: Cleavelandite

var: Oligoclase

'Albite-Anorthite Series'

Allanite-(Ce)

'Allanite Group'

Almandine

Amphibole Supergroup

var: Byssolite

var: Uralite

Analcime

Anatase

Andradite

var: Topazolite

Anglesite

Ankerite

Anorthite

'Apatite'

'Argentine'

Arsenopyrite

'Asbestos'

Autunite

'Bastnäsite'

Bavenite

Bermanite

Bertrandite

Beryl

var: Aquamarine

var: Goshenite

var: Heliodor

'Biotite'

Bismutite

Brockite

Calcite

Cassiterite

Cerussite

'Chabazite'

Chalcocite

Chalcopyrite

Chiolite

'Chlorite Group'

Chromite

Chrysoberyl

Chrysocolla

Clinozoisite

Columbite-(Fe)

'Columbite-(Fe)-Columbite-(Mn) Series'

'Columbite-Tantalite'

Cryolite

Dravite

Elpasolite

Enstatite

Euclase

Euxenite-(Y)

'Feldspar Group'

'var: Perthite'

'Fergusonite'

Ferro-hornblende

Fersmite

Fluellite

Fluorapatite

Fluorite

var: Chlorophane

Gahnite

Galena

'Garnet'

Gearksutite

Goyazite

Graphite

Helvine

Herderite

Hollandite

Hydrokenoralstonite

Hydroxylherderite

Ilmenite

Jarosite

Kaolinite

Kyanite

'Labradorite'

Lead

Lindbergite

Lithiophorite

Löllingite

Magnesite

Magnetite

Marcasite

Masutomilite

Melanterite

'Mica Group'

Microcline

var: Amazonite

Microlite Group

Molybdenite

'Monazite'

Monazite-(Ce)

Montmorillonite

'Moonstone'

Muscovite

var: Leverrierite

var: Sericite

Opal

var: Opal-AN

Orthoclase

Pachnolite

Phenakite

Phosphophyllite

Phosphosiderite

Phosphuranylite

Prosopite

Pyrite

'Pyrochlore'

Pyrochlore Group

Pyromorphite

Pyrrhotite

Quartz

var: Agate

var: Amethyst

var: Blue Quartz

var: Chalcedony

var: Milky Quartz

var: Rock Crystal

var: Rose Quartz

var: Rutilated Quartz

var: Smoky Quartz

var: Star Quartz

'Rhabdophane'

Rutile

Samarskite-(Y)

'Scapolite'

Schorl

Scorodite

Serrabrancaite

Sillimanite

Spessartine

Spodumene

Stibnite

Strengite

'Sunstone'

Sussexite

Talc

'Tantalite'

Tantalite-(Mn)

Tephroite

Thomsenolite

Thorite

Titanite

Topaz

'Tourmaline'

Triplite

'Uranpyrochlore (of Hogarth 1977)'

Vermiculite

Weddellite

Wodginite

'Wolframite'

'Xenotime'

Zincite

'Zinnwaldite'

Zircon

var: Cyrtolite

var: Hyacinth

Zoisite


107 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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

Select Rock List Type

Alphabetical List Tree Diagram

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

Mesoproterozoic
1000 - 1600 Ma



ID: 2999408
Porphyroblastic Garnet-Biotite Gneiss

Age: Mesoproterozoic (1000 - 1600 Ma)

Description: Heterogeneous layered sequence is dominantly garnetiferous biotite gneiss and porphyroblastic gneiss, migmatitic in part, with subordinate interlayered amphibolite and amphibole gneiss (Ya), pelitic-composition gneiss, calcsilicate gneiss, biotite hornblende-quartz-plagioclase gneiss, and garnetiferous leucogneiss. These lithologies contain amphibolite-facies metamorphic mineral assemblages consistent with rock chemistry. Farrar (1984) reports relict granulite-facies assemblages in some rocks. This unit underlies a wide area that surrounds the State Farm antiform (Poland, 1976; Reilly, 1980; Farrar, 1984) and two subsidiary antiforms to the northeast; the unit includes the Maidens gneiss and portions of the Sabot amphibolite of Poland (1976), the eastern gneiss complex and Boscobel granodiorite gneiss of Bobyarchick (1976), and the Po River Metamorphic Suite of Pavlides (1980). Poland (1976) and Reilly (1980) proposed that the Maidens gneiss and Sabot amphibolite were a Late Precambrian- to Early Paleozoic-age volcanic-sedimentary cover sequence unconformably overlying the State Farm gneiss. Farrar (1984) interpreted relict granulite-facies mineral assemblages to have equilibrated during Grenville-age regional metamorphism; this contributed to his conclusion that the Sabot and Maidens, in addition to the State Farm, are Grenville or pre-Grenville in age. Porphyroblastic garnet-biotite gneiss (Ymd) is intruded by rocks of the Carboniferous-age Falmouth Intrusive Suite (Pavlides, 1980).

Comments: Eastern Piedmont

Lithology: Major:{biotite gneiss}

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]

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


Localities in this Region


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