Trumbull, Fairfield County, Connecticut, USAi

Regional Level Types
Trumbull	Town
Fairfield County	County
Connecticut	State
USA	Country

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Description: in "trace amounts" pseudomorphed after argentite

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Habit: semi-fibrous

Colour: dark green

Description: Formed from alteration of magnesio-hornblende in the amphibolite at the upper mine pit adjacent to the quartz-clinzoisite zone that hosts the ferberite after scheelite pseudomorphs.

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Habit: blocky euhedral

Colour: white, green

Description: Nice white crystals along contact of quartz-fluorite veins with surrounding amphibolite. Crystals to 4-5 cm. Massive green material in the amphibolite.

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Habit: blocky euhedral

Colour: white, green

Description: Nice white crystals along contact of quartz-fluorite veins with surrounding amphibolite. Crystals to 4-5 cm. Massive green material in the amphibolite.

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Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA - erroneously reported

Description: Gurlt (1894) appears to be the only one to report this mineral, which is very unlikely and never found since. Schairer (1931) included it with other minerals reported by Hobbs (1901) in a very generalized paraphrased summary taken as fact by Schooner (1961) and Januzzi (1976) but never substantiated.

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Habit: tabular

Colour: blue-green

Description: Microcrystals assocaited with calcite and fluorite in mineralized brittle fault veins.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA - erroneously reported

Description: Speculation by Januzzi about garnet reported in the marble by Hobbs and others. These have been shown to be grossular.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: anhedral flakes

Colour: black

Description: Occurs as a rind along the boundary of bodies of massive, albite-rich bodies formed as an alteration of the hosting amphibolite.

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Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: massive, columnar

Description: Massive material in the amphibolite.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Included in a list of minerals by Januzzi with no details.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: blades

Colour: white to gray

Description: Few details provided by Januzzi and Sullivan, but a photo included in Januzzi (1994). Probably in brittle fault mineralization.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: fine needles

Colour: white

Description: Micro crystals lining fractures with fluorite, albite, clinchlore, gypsum.

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Description: Microcrystals associated with calcite and fluorite in mineralized brittle fault veins.

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Colour: light green (emerald)

Description: Small, but very clear light green beryl found in limestone (calcite) pods in black schist. Color possibly caused by iron(?) impurities. Dissolve the crystals out of the matrix with dilute HCl.

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Description: Januzzi found it with native copper and other copper minerals in small quantities in the dump for the tungsten mine.

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Habit: hexagonal prisms, trigonal tabular overgrown around a tiny central rhomb, scalenohedral, botryoidal

Colour: white to creamy. pink to salmon

Fluorescence: orange-red, pink

Description: Many occurrences - as massive vein filling with green fluorite, clinchlore, gypsum, sulfides, beryl, phlogopite; as discrete crystals (red-orange-fluorescing) that look like little trigonal discs piled in fractures in amphibolite with pyrite and purple fluorite; as dogteeth filling little pockets in brecciated marble - these are creamy colored and fluoresce pink. Short hexagonal prisms to 1.7 cm. Very rarely found as pinkish botryoidal to 8 mm from a calcite vein associated with pyrite. Salmon-colored massive is uncommon.

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Habit: needle-like prisms

Colour: white

Description: Occurs as snow-white encrustations of intergrown needle-like crystals, formed from the weathering of galena

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Description: Infrequently found as massive material which is the source of secondary copper minerals. Very rare as microcrystals.

Localities: Reported from at least 6 localities in this region.

Habit: double cones applied base to base, curved to spherical aggregates of radiating plates

Colour: dark green to black

Description: Accessory in the marble or along contacts of cross-cutting veins with country rock, especially veins rich in calcite, albite and scapolite. In voids as micaceous aggregates up to 2 cm shaped like “double cones applied base to base” (Shepard, 1837) or generally spherical. Good albite and clinochlore crystals are found in small voids in these veins or where they formed in contact with chlorophane "in joints in marble in the bottom of the main pit, some narrow veins filled with a greenish black chlorite, which formed fine granular friable aggregates of small variously oriented crystals. Where free surfaces are present the chlorite exhibits the vermiform curved prismatic crystals commonly called helminthe forms. These free surfaces are usually coated with manganese oxide." (Shannon, 1921b). Called prochlorite in some old literature.

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Habit: acicular

Colour: gray-brown to green-brown

Description: Acicular crystals in voids in altered amphibolite, with white scapolite.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Microcrystals.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: rhombohedral hemimorphic, with the forms c (0001) and x (bar2021)

Colour: black

Description: This is all the information provided by Hoadley on the purported cronstedtite: "On a recent trip of the New York Mineralogical Club, under the guidance of the writer, to the Hubbard tungsten mine at Long Hill (Trumbull Township), Connecticut, Mr. George E. Ashby found a specimen of a chlorite, determined by Mr. Lazard Cahn as cronstedtite, 4FeO.2Fe2O3.3SiO2.4H2O. The specimen shows a group of black crystals 1/8 inch in diameter with perfect basal cleavage, hardness = 3.5, and rhombohedral hemimorphic, with the forms c (0001) and x (bar2021). This is believed to be the first occurrence of the mineral in the United States..." Identity questioned by Manchester (1931), p. 38. Description sounds like the common clinochlore found here.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: thin or 6-sided tables flattened parallel to the shorter diagonal

Colour: yellowish-white

Description: First reported by Shepard (1842) as euclase forming "thin, transparent, yellowish-white tabular crystals, lining cavities in a silvery white mica, and sometimes imbedded in a dark purple fluor" in the topaz veins. Later retracted and confirmed to be diaspore by Shepard (1851) and Dana (1851): H=7-7.5, SG=3.29, alumina 84.9%, water 15.1% and described as "thin or 6-sided tables flattened parallel to the shorter diagonal". May be more common than reported because who has really looked?

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Localities:

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: subhedral blocky

Colour: brown-green

Description: A blocky crystal in quartz/clinozoisite rock with most of the interior altered to a mass of actinolite. Pictured in Januzzi (1994) with caption that it was "x-rayed" with probable enstatite ID (not sure why he qualified it). He did not note the alteration of the crystals' interiors.

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Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: secondary microcrystals

Colour: pink

Description: Secondary microcrystals associated with cobaltite microcrystals in cross-cutting calcite veins.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA - erroneously reported

Description: First reported by Shepard (1842), later retracted and confirmed to be diaspore by Shepard (1851) and Dana (1851).

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Habit: pseudomorphs after bipyramidal scheelite

Colour: black to dark brown

Description: The only US locality for ferberite after scheelite crystals, with only about 8 other world-wide localities. First described by Silliman (1819-1822) but not recognized as pseudomorphic after scheelite for a few decades. Pseudomorph occurrence is locally restricted to the quartz/clinzoisite-rich contact between the amphibolite and marble at the upper mine pit, sometimes in small open spaces formed from the dissolution of calcite in that zone, and perhaps a nearby locality northeast of the "Burnett place" by Hobbs (1901). Occurs as anhedral lumps to euhedral crystals <1 to >10 cm, the latter size usually aggregates, in the amphibolite. Intermixed scheelite/ferberite partial replacement crystals are common. Some crystals reported with "spongy" texture, probably where tungstite formed and was weathered out. Typically called "wolframite" in most reports but Silliman's original wet chemical analysis shows it is what we now call ferberite and the use of the obsolete term "wolframite" should be abandoned. Januzzi (1994) confirms Silliman's Fe-dominant analysis: "Chemical analysis (Grand Junction Laboratory, Grand Junction, Colorado - Bauer) gave the following results: Tungsten 60.1%, Iron 17.8%, Manganese 0.21%. Non-fibrous material yielded 16.3% iron and 0.95% manganese."

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Details of the find needed.

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Localities: Reported from at least 8 localities in this region.

Habit: massive

Colour: colorless to light smoky, rarely pale red

Fluorescence: blue-green with green phosphorescence

Description: As cleavable masses in the quartz-fluorite veins. Unless collected right after exposure to daylight, the fluorescence is lost.

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Habit: massive

Colour: colorless to light smoky, rarely pale red

Fluorescence: blue-green with green phosphorescence

Description: As cleavable masses in the quartz-fluorite veins. Unless collected right after exposure to daylight, the fluorescence is lost.

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Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Included in a list by Januzzi with no details, apparently based on early reports by Silliman of minerals actually from Lane's mine of Monroe. No modern data regarding the Ag content of galena from Connecticut has been published.

Locality: State Route 25 road cuts, Trumbull, Fairfield County, Connecticut, USA

Habit: dodecahedral

Colour: white to pale yellow

Description: Microcrystals and massive in a vein or Alpine-type cleft in impure marble with vesuvianite - usually grossular occurs with vesuvianite. Also on it is an acicular, blue-green mineral - likely actinolite, and radiating, acicular, flat, hard, pale yellow-green crystals. These could be maybe diopside, wollastonite, prehnite?

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Habit: botryoidal, fibrous

Colour: brown

Description: Botryoidal masses in open spaces of fluorite-calcite-albite-clinochlore-gypsum veins, apparently due to altered iron sulfides.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: massive

Colour: dark gray

Description: A 6.5 x 5 x 3.5 cm specimen in Ronald Januzzi's collection contains a thin irregular layer of graphite frozen in massive quartz. Slight vugginess and rounded crude quartz crystals suggests the piece came from the vuggy quartz zone on the east corner of the upper mine pit.

Locality: State Route 25 road cuts, Trumbull, Fairfield County, Connecticut, USA

Habit: crusts and films on schist, free standing micro crystals on quartz and sphalerite

Colour: yellow

Description: yellow encrustations in the veins with galena, quartz, sphalerite, fluorite commonly labeled greenockite are not confirmed. SEM-EDS on one came back as “Probably a mixture of Fe, Mn, and Zn oxides/hydroxides and/or carbonates. Maybe goethite, hydrozincite, and a Mn mineral(s)? Definitely not greenockite or and any other sulfide. We checked another spot and got similar results, except no Mn.” Perhaps impure smithsonite.

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Habit: dodecahedral

Colour: cinnamon to clove brown

Description: Accessory in calc-silicate layers in the marble. Well-formed, gemmy crystals to 1.5 cm or so. Reported by Shannon (1921b) as "garnet" thus: "Brownish red granular garnet occurs both in the main pit and in the lime-kiln opening in nodular or lenticular masses in marble which may reach a foot in greatest diameter. Where such masses have had the surrounding calcite dissolved away small dodecahedral crystals are revealed."

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Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: radiating clusters

Colour: Greenish- Black

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Minor accessory in the veins.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: State Route 111 road cuts, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Only confirmed ferberite pseudomorphs after scheelite have ever been found in the area, and only within the adjacent Old Mine Park. Analyses are needed to substantiate this mineral.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA - erroneously reported

Description: Dehydrates to tungstite, whose presence outside of neighboring Old Mine Park has not been validated.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Habit: Coatings and crusts.

Colour: shades of yellow

Description: Details of the find are needed. Visually confused with tungstite. If found in the upper mine area analysis is need to show the composition. Tungstite probably has not been found here since the 19th century.

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Habit: well-terminated prismatic micros

Colour: white

Description: micro crystals associated with quartz, sphalerite, fluorite, galena.

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Habit: well-terminated prismatic micros

Colour: white

Description: micro crystals associated with quartz, sphalerite, fluorite, galena.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: SEM-EDS showed a copper sulfate. Visual identification compared to crystal drawing #1 under Langite (Goldschmidt) on Mindat.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: prismatic

Colour: white

Description: Small prisms with stilbite in fractures.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Habit: elongated prisms

Colour: black to dark greenish black

Description: The major component of the amphibolite in the park and adjacent areas. This is a very common species of amphibole in Connecticut based on various TEM-EDS analyses.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Habit: powdery

Colour: green

Description: An occasional micromount-sized piece may be found.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Habit: micaceous, fibrous, compact

Colour: white, gray, pale green

Description: As bands of soft but brittle parallel fibers with pearly luster surrounding and/or replacing some topaz crystals. Grading to micaceous to granular, the latter especially in the cores of altered crystals. Associated with unaltered topaz, muscovite, quartz, fluorite in cross-cutting hydrothermal veins. Confirmed using Raman spectroscopy by Paul Bartholomew, U. New Haven, 2014.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: A supposed variety of muscovite found along the contact of cross-cutting quartz-topaz-fluorite-muscovite veins with the host amphibolite. It is an old term that has not significance and should be abandoned.

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Habit: radiating acicular

Colour: white, pale to dark green

Fluorescence: pink to lavender

Description: As large radiating acicular masses in the amphibolite associated with microcline, oligoclase, quartz, sulfides and clinochlore. Also along contact zones of the amphibolite with the cross-cutting quartz-topaz-fluorite-muscovite veins associated with phlogopite and beryl.

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Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: subhedral hexagonal plates

Description: Subhedral 2 cm crystal in quartz hosted by amphibolite.

Localities: Reported from at least 6 localities in this region.

Habit: micaceous

Colour: silvery

Description: Lining the contact of hydrothermal veins, and in joints.

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Habit: massive, striated

Colour: tarnished bronze

Description: Small mass, <2 cm, in massive quartz.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: thin lenses, masses, arborescent

Colour: copper

Description: From Januzzi (1994): "Native copper was originally found by the author at the upper working of the old tungsten mine where it occurs in exceedingly thin lenses and masses, at times distinctly arborescent in habit. Further research indicates that a series of copper minerals occur, in small amounts, as a component of the tailings, these species include: native copper, malachite, cuprite, chalcopyrite, bornite, chalcocite(?), and covellite(?). The latter two species have been reported but not confirmed. Native copper has been observed as inclusions in massive, iron stained, quartz. The most interesting occurrence takes the form of dendritic overgrowths on crystal faces of wolframite pseudomorphs after scheelite. This native element has also been observed in a matrix containing quartz, clinozoisite, pyrrhotite, and limonite." A photo is included in this reference.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Included in a list by Januzzi with no details.

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Description: trace amounts associated with acanthite

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Description: Included in a list of minerals by Januzzi, details lacking but plausible as it is very common in Connecticut.

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Description: Hyalite variety. Fluoresces green.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Colour: bright green

Description: Included in lists, with no details. Probably confusion with diopside.

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Habit: subhedral tabular, granular. euhedral tabular to barrel-shaped

Colour: dark brown

Description: Found along the contact of cross-cutting hydrothermal calcite veins with the host amphibolite, crystals to 0.5 cm in the calcite, grading to fine-grained in the metasomatized adjacent amphibolite. Associated with scapolite, quartz, clinochlore, sulfides, rarely beryl, fluorite. Rare nice euhedral crystals to 1.5 cm. Rare euhedral microcrystals on albite found as barrel-shaped prisms with hexagonal cross-section, or tabular with a pseudohexagonal shape.

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Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: prismatic

Colour: pale green

Description: Muscovite pseudomorphs after marialite

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: Orthorhombic crystals, thick to thin tabular, striated. Also fanlike aggregates.

Localities: Reported from at least 6 localities in this region.

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Description: A black earthy mineral which has never been submitted for technical identification.

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Habit: acicular, rounded hexagonal aggregates of needles, hexagonal prisms

Colour: green to pale green, cream, white

Description: "fine acicular crystals of pale green pyromorphite (X-rayed Newmont Exploration) associated with galena, wulfenite, cerussite, and iron and manganese oxides. Occurs in several habits ranging from typical prismatic forms to acicular crystals of great beauty." (Januzzi 1994) Found in heavily limonite-stained rock with cubic cavities of former galena crystals.

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Habit: massive. hexagonal microcrystals

Colour: reddish bronze

Description: An accessory in the calcite veins and amphibolite. Microcrystals in cavities in calcite veins.

Localities: Reported from at least 8 localities in this region.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Description: micros in schist

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Habit: radiating acicular

Colour: white, pale to dark green

Description: A large amount of material was found by Mike Otto in 2010. It was originally thought to be Tremolite but testing of a piece of material collected by David Bernstein ( Testing- Bart Cannon) revealed it to be Scapolite

Localities: Reported from at least 6 localities in this region.

Colour: White to Honey Yellow

Fluorescence: Light Blue

Description: Excellent crystals of this scheelite are well-known among New England collectors. Primary Tungsten-bearing mineral from the locality. Occasionally, one may find a Wolframite after Scheelite crystal.

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Habit: cleavable masses, curved rhombohedral

Colour: tan to light brown

Description: Massive vein material associated with quartz, galena, pyrite. Also curved, rhombohedral microcrystals with quartz and fluorite (Bill Henderson collection at Yale Peabody Museum).

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

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Habit: complex aggregates, modified tetrahedrons

Colour: black, dark brown, yellow-brown, greenish brown, yellow

Description: massive dark-colored veins, crystals (micros) show two generations or growth - 1) dark brown complex aggregates and 2) lighter-colored single crystals. Associated with quartz, galena, adularia, fluorite.

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: radiating aggregates

Colour: tan

Description: Small aggregates with laumontite in fractures.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Description: Januzzi includes it in a list with this footnote: "Recent (1994) confirmation of the following mineral species, either by x-ray and or chemical analyses."

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Description: A minor accessory.

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Localities: Reported from at least 7 localities in this region.

Habit: prismatic with square to rhombic section

Colour: colorless, white, grey, green, yellow-brown, blue

Description: A common, but locally variable component of the cross-cutting veins with quartz, fluorite, and muscovite, the latter commonly coating the crystals, even replacing them. Rarely gemmy. Crystals usually anhedral to subhedral prisms rarely terminated, up to 6 to 8 inches in diameter, with a length of 3 to 7 inches; micro crystals can be found that are transparent and show a great perfection of form and beauty. "Topaz is present in the quartz veins in quite unusual amount. The best locality is that described as the Limekiln Vein. This vein, which has been opened for a distance of some 75 feet, is from 1 to 5 feet wide. The vein originally consisted almost entirely of quartz and topaz, the quartz being considerably more abundant than the topaz...The topaz occurs in coarse crystalline masses of gray to pale yellow or white color, with well-defined cleavage, some of the cleavage surfaces being a foot in diameter. Most of the topaz contains veins and disseminated scales of margarodite, and large masses of margarodite contain cores of corroded and embayed topaz. Where the topaz abuts against small open cavities in the center of the vein it is bounded by rough crystal planes. Many of these cavities have been filled with coarse foliated margarodite not derived from the adjacent topaz crystals, as the surfaces of these crystals corroded." (Shannon, 1921b)

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Colour: Dark-Metallic

Description: Very rare microcrystals possibly of this mineral occasionally found in marble. Analyses needed. This ID is very doubtful given that the only report of tungstenite (a rare alteration of scheelite or ferberite) from the adjacent Old Mine Park by Schairer (1931) (a summary of other information) is almost certainly a misspelling of tungstite. The scheelite (or ferberite) is restricted to the amphibolite and does not occur in the marble. These could be primary ferberite micro-crystals (see photos).

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Type Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: massive

Colour: orange-yellow, chrome yellow, yellowish gray

Description: An alteration of ferberite pseudomorphs after sheelite, coating and occupying cavities in these crystals from the upper mine pit. Looks like "broken sulfur". Very little of this material has been found since the mid-19th century as the highly weathered portion of the outcrop worked then by Charles Lane has long been removed by subsequent mining. Originally and incorrectly attributed to Lane's mine in Monroe, neither ferberite pseudomorphs after scheelite, nor scheelite occur there and so the type locality for this mineral is actually here.

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: cubo-octahedral

Colour: black

Description: Januzzi (1994): "This micro-uraninite crystal (B14) was found embedded in dark purple fluorite occurring in the country rock zone (pegmatite) at the upper working of the old tungsten mine at Trumbull." Photos included in the reference.

Locality: State Route 25 road cuts, Trumbull, Fairfield County, Connecticut, USA

Habit: elongated prismatic

Colour: colorless

Description: Clear, colorless, striated, elongated microcrystals in a vein or Alpine-type cleft in impure marble. With garnet that is white to pale yellow - usually grossular occurs with vesuvianite. Also on it is an acicular, blue-green mineral - likely actinolite, and radiating, acicular, flat, hard, pale yellow-green crystals. These could be maybe diopside, wollastonite, prehnite?

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA

Habit: bipyramidal pseudomorphs after scheelite

Colour: dark brown to black

Description: Actually long known to be the iron-rich end-member species ferberite. The use of the term "wolframite" for crystals from here should be abandoned. See more description under ferberite.

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Habit: tetragonal bipyramids

Colour: brown

Description: micro crystals associated with pyromorphite, cerussite, galena, and quartz

Locality: Old Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA

Locality: Old Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA - erroneously reported

Description: The "epidote" and "zoisite" in the amphibolite and its quartz-rich contact with the marble mentioned in many reports is actually clinozoisite.