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Lime Crest Quarry (Lime Crest-Southdown Quarry; Limecrest Quarry), Franklin Marble, Sparta Township, Sussex Co., New Jersey, USA

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Detailed Mineral List:


Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Habit: coarse granular to elongated euhedral crystals
Colour: pale to dark green
Description: Clusters of elongated crystals in calcite to several cm or massive in skarn layers with other Mg rich minerals.
Reference: Harold Moritz collection
Albite
Formula: Na(AlSi3O8)
Habit: massive
Colour: white to gray
Description: As cleavable, pseudormophous masses replacing calcite, with microcline, quartz, scapolite in skarn layers.
Reference: Harold Moritz
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Habit: tabular
Colour: black
Description: Black tabular crystals to a few cm in microcline, quartz, hedenbergite, titanite matrix.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Amphibole Supergroup
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Van King
Arsenopyrite
Formula: FeAsS
Reference: Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334
Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
Description: Occurs as transparent, bladed, tabular crystals of delicate color in fracture surface cavities in microcline-quartz-rich pegmatite within the Precambrain Franklin marble.
Reference: Common knowledge among local collectors. Ferro-axinite was analyzed and confirmed as that member of the group.
Baryte
Formula: BaSO4
Habit: Thin tabular.
Colour: Snow-white
Fluorescence: tan to creamy white
Description: Occurs in a Mississippi Valley-like deposit vein in Precambrian Franklin marble as bladed masses and paper-thin, tabular crystals in cavities. Associated with fluorite, sphalerite, galena, quartz, pyrite.
Reference: Collected personally - C. Lemanski, Jr.
'Biotite'
Brucite
Formula: Mg(OH)2
Habit: micaceous
Colour: pale to dark green
Fluorescence: pale blue
Description: Micaceous layers with other Mg-rich minerals in skarns. Much or what has been called muscovite from here is likely brucite.
Reference: Harold Moritz collection
Calcite
Formula: CaCO3
Habit: anhedral cleavable masses, rare hexagonal prisms with rhomb terminations
Colour: white to pale grey
Fluorescence: magenta to pink (MW)
Description: Extremely coarse-grained cleavable masses of white to pale gray calcite make up most of the formation. Secondary calcite crystals in small dissolution cavities can reach 1 cm associated with quartz, pyrite, hematite, dolomite.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Chondrodite
Formula: (Mg,Fe2+)5(SiO4)2(F,OH)2
Habit: rounded grains
Colour: orange-brown
Description: Mostly as rounded grains or crude crystals to 1 cm.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Common knowledge among local collectors.
'Clinozoisite-Epidote Series'
Reference: Van King
Corundum
Formula: Al2O3
Habit: crude hexagonal prisms
Colour: Pink, purplish, light to dark blue
Fluorescence: Red (LW) (pink colored only).
Description: As crude crystals to a few cm, some partly replaced by serpentine, rimmed by talc. Usually in a tough, massive tremolite, spinel, phlogopite, rutile rich rock.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Diopside
Formula: CaMgSi2O6
Reference: Common knowledge among local collectors.
Dolomite
Formula: CaMg(CO3)2
Habit: rhombohedral, massive
Colour: gray
Description: Commonly massive with sphalerite, pyrite, barite, fluorite. Very rarely as micro-rhombs in dissolution cavities with calcite, pyrite.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: long to short prismatic terminated by rhombohedrons and pedion.
Colour: Nearly white to very dark brown.
Fluorescence: yellow
Description: terminated prismatic crystals to a few cm, massive to many cm.
Reference: Harold Moritz collection
Edenite
Formula: {Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Fluoborite
Formula: Mg3(BO3)(F,OH)3
Reference: Dunn(1995):Pt5:641
Fluorapatite
Formula: Ca5(PO4)3F
Habit: elongated hexagonal prismatic
Colour: light blue, gray-brown
Description: Prismatic crystals to a few cm. Surprisingly rare.
Reference: Modris Baum photo; Harold Moritz collection.
Fluorite
Formula: CaF2
Habit: massive
Colour: Colorless, purple, pale greenish.
Fluorescence: Bright blue (LW) (colorless & pale green only).
Description: Large masses of transparent, colorless fluorite with masses of dark purple and pale greenish material were found on a one-time basis in a Mississippi Valley-like deposit in the Franklin marble. Associated with baryte, sphalerite, galena, dolomite.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Fluoro-tremolite (TL)
Formula: ☐{Ca2}{Mg5}(Si8O22)F2
Type Locality: Lime Crest Quarry (Lime Crest-Southdown Quarry; Limecrest Quarry), Franklin Marble, Sparta Township, Sussex Co., New Jersey, USA
Reference: Oberti, R., Cámara, F.,Bellatreccia, F., Radica, F. and Gianfagna,A. (2016) Fluoro-tremolite, IMA 2016-018.CNMNC Newsletter No. 32, August 2016,page 917; Mineralogical Magazine, 80: 915–922
Galena
Formula: PbS
Habit: anhedral to crude
Colour: gray
Description: Mostly small grains or crude crystals associated with fluorite, baryte, pyrite, dolomite, sphalerite.
Reference: Harold Moritz collection
Galena var: Argentiferous Galena
Formula: PbS
Description: Mr. Cummings extracted a bead of silver from a sample of the galena in the Mississippi-Valley-Type-Deposit occurrence in the quarry.
Reference: Mr. Warren Cummings, Geologist, New Jersey Dept. of Transportation.
'Garnet'
Formula: X3Z2(SiO4)3
Graphite
Formula: C
Habit: thin tabular disks
Colour: black
Description: Thin disks around 1 cm in the marble and skarn.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978): 9; Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334; Jaszczak, John A. (1998), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: The Picking Table: 39(1): 20-24.
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Kuitems, Steven (2000) Field Trip Report. Lime Crest Quarry, The Picking Table, v. 41 (1), p. 6.
Hedenbergite
Formula: CaFe2+Si2O6
Habit: anhedral
Colour: dark greenish black
Description: In skarn units with titanite, microcline, quartz, albite, scapolite, etc.
Reference: Volkert, Richard A. (2010): Deep Drilling at Limecrest Quarry, Sparta, New Jersey. Picking Table, Volume 51, No. 1, p. 10-13.
Hematite
Formula: Fe2O3
Habit: fine granular, earthy
Colour: red
Description: As inclusions in secondary calcite crystals and coatings on adjacent, etched quartz, with fluorite.
Reference: Harold Moritz collection
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: Common knowledge among local collectors.
'Heulandite'
Colour: Yellowish
Description: Occurs as druses of tiny crystals on fracture seams in silicate rocks.
Reference: Chester S. Lemanski, Jr.
Magnesio-hornblende
Formula: ☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Reference: No reference listed
Magnetite
Formula: Fe2+Fe3+2O4
Habit: anhedral grains and masses
Colour: black
Description: A concentration of ~5mm grains and masses in otherwise typical calcite marble found in 1991.
Reference: Harold Moritz collection
Microcline
Formula: K(AlSi3O8)
Description: The microcline can occur as pure white crystalline masses, sometimes as graphic granite with intergrown quartz, and fluoresces deep magenta-red (SW UV).
Reference: Common knowledge among local collectors.
Molybdenite
Formula: MoS2
Reference: Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: more likely to be brucite
Norbergite
Formula: Mg3(SiO4)(F,OH)2
Habit: Crystals vary from somewhat acute appearing rhombic cross-sections to blocky.
Colour: Light yellow to orange brown
Fluorescence: Yellow
Description: Rounded euhedral crystals to several cm, or more commonly as anhedral grains, sometimes in large, nearly pure masses, associated with spinel.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Pargasite
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Description: light purple to brown, nonfluorescent
Reference: John Cianciulli, ID by optics
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Habit: micaceous
Colour: brown
Reference: Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334
Pyrite
Formula: FeS2
Habit: cubic, octahedral, rare diploidal
Description: Crystals generally up to about 1 cm in marble, micro crystals in dissolution pockets with calcite, dolomite, quartz.
Reference: Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334
Pyrrhotite
Formula: Fe7S8
Habit: anhedral masses
Colour: bronze
Description: Masses to several cm in marble commonly associated with spinel, humite group minerals.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.; Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334
Quartz
Formula: SiO2
Habit: massive, rare prismatic crystals
Colour: smoky, colorless, white
Description: Massive with microcline, albite, hedenbergite, titanite, scapolite in skarn units. Rarely as etched prismatic crystals in dissolution pockets with calcite, pyrite, dolomite, hematite.
Reference: Harold Moritz collection
Rutile
Formula: TiO2
Reference: Common knowledge among local collectors. Ferro-axinite was analyzed and confirmed as that member of the group.
'Scapolite'
Habit: massive to subhedral
Colour: pale gray, pale green, pink
Description: Tough, massive material common in skarn units but inconspicuous, associated with actinolite, microcline, quartz, titanite, hedenbergite, albite, brucite, serpentine.
Reference: Harold Moritz collection
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Habit: massive
Colour: gray, brown, olive, bright green
Description: As massive material with other Mg-rich minerals or calc-silicates, as a bright green rind around corundum, with talc, spinel and phlogopite.
Reference: Harold Moritz collection
Sphalerite
Formula: ZnS
Habit: massive
Colour: yellow, oil-green & dark brown
Description: Occurred in a Mississippi Valley-like deposit within the Franklin marble associated with baryte, fluorite, dolomite, pyrite. Some masses of oil-green spahalerite were transparent and faceting grade material.
Reference: Collected by C. Lemanski, Jr.; Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334
Spinel
Formula: MgAl2O4
Habit: octahedral
Colour: pink, maroon, dark blue, purplish-gray, dark gray
Description: Commonly as subhedral to euhedral grains associated with humite group and pyrrhotite. Best crystals to 1.5 cm and reddish in a dense, medium-grained, white calcite with excellent norbergite crystals and graphite.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Talc
Formula: Mg3Si4O10(OH)2
Habit: massive
Colour: shades of green
Description: Massive material in shear zones, along the contact of skarn zones with calcite, as a rind around some corundum crystals partly altered to serpentine.
Reference: Harold Moritz collection
Titanite
Formula: CaTi(SiO4)O
Habit: tabular
Colour: brown
Description: Abundant crystals to 2-3 cm in zones within skarn units associated with hedenbergite, quartz, microcline, albite, scapolite, allanite. Some crystals pseudomorphed by a black mineral.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Habit: elongated sprays of prismatic crystals, tough massive
Colour: gray
Description: Sprays of euhedral crystals can reach several cm.
Reference: A Quest for New Jersey Minerals, Robert Speiser (1978):9.
Wollastonite
Formula: CaSiO3
Description: Occurs in typical snow-white masses of divergent fibers.
Reference: Common knowledge among local collectors.
Zircon
Formula: Zr(SiO4)
Colour: Brown
Reference: in the collection of J. Esche, EDS-confirmed by Dr. J. Gröbner, TU Clausthal; personally collected by C. Lemanski, Jr.

References

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Speiser, Robert (1978), A Quest for New Jersey Minerals: 9 (privately published).
Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334.
Jaszczak, John A. (1998), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: The Picking Table (Journal of the Franklin-Ogdensburg Mineralogical Society [FOMS]): 39(1): 20-24.
Wolf, A., Rakovan, J. and Cahill, C. (2003) Ferroaxinite From Lime Crest Quarry, Sparta, New Jersey. Rocks and Minerals: 78: 252-256.
Volkert, Richard A. (2010): Deep Drilling at Limecrest Quarry, Sparta, New Jersey. The Picking Table: 51(1): 10-13.
Information Letter re: Minerals, published by the Limestone Products Corp.
USGS map GQ-1707.
Cummings, Warren L. (2016) Aluminum-Rich Mineral Assemblages at Lime Crest Quarry, Sparta Township, New Jersey. The Picking Table: 57(1): 17-22.

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