Walden Gem Quarry, Portland, Middlesex County, Connecticut, USAi
Regional Level Types | |
---|---|
Walden Gem Quarry | Quarry (Inactive) |
Portland | - not defined - |
Middlesex County | County |
Connecticut | State |
USA | Country |
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Latitude & Longitude (WGS84):
41° 37' 7'' North , 72° 35' 45'' West
Latitude & Longitude (decimal):
Type:
Quarry (Inactive) - last checked 2019
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Cromwell | 13,750 (2017) | 4.9km |
Portland | 5,862 (2017) | 6.3km |
Lake Pocotopaug | 3,436 (2017) | 7.5km |
Middletown | 46,756 (2017) | 7.7km |
East Hampton | 2,691 (2017) | 9.1km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
Club | Location | Distance |
---|---|---|
Lapidary and Mineral Society of Central Connecticut | Meriden, Connecticut | 20km |
Bristol Gem & Mineral Club | Bristol, Connecticut | 30km |
New Haven Mineral Club | New Haven, Connecticut | 44km |
Mindat Locality ID:
6749
Long-form identifier:
mindat:1:2:6749:5
GUID (UUID V4):
e5542730-0acc-4523-8486-9e116e33ed4e
A lithium rich granite pegmatite opened for specimen and gem mining in 1962. It is not the same locality as the nearby Gotta-Walden prospect, which is a mica, feldspar, beryl prospect operated before and during the early 1940s. The quarry was opened up early in 1962 by two young miners who leased the property from Mr. Walden. The ledge had never been previously blasted but outcropped prominently on top of the hill.
Into the early 1990s it was a popular fee collection site, with Ed Walden also selling specimens from a shack near the front of the property. It closed after his passing. The locality is famous for large masses of gemmy pollucite (many gemstones have been cut from this material), conical purple lepidolite crystals in blue cleavelandite, and excellent rubellite crystals. Montebrasite and spodumene, some of it cuttable variety kunzite, and reddish wodginite and/or tantalite-(Mn) also occur.
Seaman (1963) describes the pegmatite as follows, with comments in [ ]:
The Walden quarry is located in a lenticular body of pegmatite. It is a zoned pegmatite and the contact with the schist is sharp; the other contact at the time of the writerβs visit being hidden. The border zone is only a few inches thick and consists chiefly of granular albite, muscovite, and quartz. The wall zone consists of intergrown albite of the variety cleavelandite, quartz, muscovite, biotite [annite], black tourmaline, a few small black columbite crystals, pale yellow to light green and colorless beryl crystals, and frequently large crystals of almandite-spessartite garnet. It grades into a rich lithium mineral zone in the core of the pegmatite. The minerals of the core zone are highly colored lithium tourmalines with the pink or rubellite being the most prevalent color, also light green, dark blue, and a small amount of pale watermelon colored tourmaline; massive and fine grained purple lepidolite; some wedge shaped, hemispherical grown, purple lepidolite; white, gray, and pale blue albite of the variety cleavelandite; spodumene; pollucite; caesium beryl, both morganite and goshenite; montebrasite; mangantantalite [some are likely to be wodginite]; yellow microlite and dark brown pyrochlore; rare, dark blue manganapatite; and granular to massive clear, and smoky quartz. Parts of the spodumene contain clear, purple areas of gem kunzite from which small stones could be cut. Some of the caesium beryl contains transparent areas of both morganite (pink) and goshenite (colorless) material suitable for fashioning into gem stones. A few of the pink tourmalines also possess small, clear, gem areas.
Barton and Goldsmith (1968) give this description, with comments in [ ]:
At the surface the western pegmatite has a maximum thickness of 10 feet, the eastern one, 20 feet. Both pegmatites thin rapidly in both directions along strike, the upper (western one) splitting into three branches before it pinches out to the south. The eastern and larger pegmatite consists mostly of [microcline] perthite crystals up to 1 foot in diameter separated by veinlets and pods of smoky and lesser amounts of milky quartz, usually with less than 6 inches between the feldspar crystals. Scattered books of muscovite average 1 inch across by 1/2 inch thick. Light green to yellow beryl crystals up to 1 foot long by 6 inches thick comprise 0.1 percent of the rock. There is very sparse accessory garnet and biotite [annite]. A 6-inch-thick wall zone along the exposed hanging wall consists of a finer grained mixture of feldspar and quartz with small green, beryl crystals com¬posing 1.0 percent of its constituents. The very fine grained border zone is less than 1 inch thick and consists of biotite [annite] and smoky to citrine quartz. The smaller, western pegmatite is rich in alkalis and is the one from which the gem stones are recovered. It is similar mineralogically to the Dunton pegmatite at Newry Hill, Maine. The exposed pegmatite is principally cleavelandite. The outermost 3 to 5 feet is enriched in almandite garnet and black tourmaline and cleavelandite is white rather than gray to blueish-green, but this color change may be a result of near surface leaching. Gray quartz and a small amount of perthite are associated with the cleavelandite in this zone. Muscovite is sparse and in small books only. The inner zone of colored cleavelandite actually is more a series of replacement pods rather than a true zone. Both downdip and along strike it grades into perthite-bearing pegmatite similar to the eastern pegmatite outcrop. The cleavelandite pods in places contained large masses of deep purple lepidolite forming 10 percent of the rock over areas of several cubic feet. Green, white, and pink beryl up to 1 foot by 6 inches formed about 0.5 percent of these areas. Spodumene including gem kunzite and hiddenite was present in logs up to 1 foot by 4 inches comprising about 1.0 percent of the lepidolite enriched areas. Pollucite in masses up to 1 foot across was seen, in similar concentration. Rubellite up to 6 inches long was also closely associated with the lepidolite. Small (1/8-inch) dark red manganotantalite [some are likely wodginite] was an abundant accessory in restricted sections a few inches across. Manganoapatite was fairly common and rare minerals present included autunite, columbite, pyrochlore [microlite], amblygonite [montebrasite], and uraninite.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
β Albite Formula: Na(AlSi3O8) Colour: white |
β Albite var. Cleavelandite Formula: Na(AlSi3O8) Habit: tabular Colour: white to pale blue Description: Pale blue color where associated with the lithium minerals in the core zone. |
β Allanite-(Ce) Formula: (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) Habit: subhedral tabular Colour: black Description: Aggregates of subhedral crystals to 1.5 cm. SEM-EDS analysis found no thorium in the sample. |
β Almandine Formula: Fe2+3Al2(SiO4)3 Habit: dodecahedral Colour: maroon to red Description: commonly massive and with fluorapatite, in the outer 3 to 5 feet of the western pegmatite, XRF testing of one garnet revealed 63% Fe, 37% Mn. |
β Annite Formula: KFe2+3(AlSi3O10)(OH)2 Habit: anhedral Colour: black Description: fka biotite. Prevalent in the wall zone. References: |
β Autunite Formula: Ca(UO2)2(PO4)2 · 10-12H2O References: |
β Beryl Formula: Be3Al2(Si6O18) Habit: Habits include the 18-sided prism form comprised of the primary, secondary and tertiary prisms (large pale aquamarine, opaque crystal purchased directly from Mr. Walden in the mid-1980's by C. Lemanski, Jr.) Colour: pale green to yellow. Description: Common green beryl mostly in the wall zone. crystals up to 1 foot long by 6 inches thick in the eastern pegmatite. |
β Beryl var. Aquamarine Formula: Be3Al2Si6O18 |
β Beryl var. Goshenite Formula: Be3Al2(Si6O18) Colour: white Description: In the mineralized core zone. References: |
β Beryl var. Heliodor Formula: Be3Al2(Si6O18) Habit: elongated hexagonal prisms Colour: yellow Description: In the wall zone where found with biotite. |
β Beryl var. Morganite Formula: Be3Al2(Si6O18) Description: up to 1 foot by 6 inches |
β Cassiterite Formula: SnO2 References: |
β Columbite-(Fe) Formula: Fe2+Nb2O6 Colour: black with iridescence Description: It occurs chiefly as black, metallic crystals of small size from a half inch to an inch in length. Associated with fluorapatite. |
β 'Columbite-(Fe)-Columbite-(Mn) Series' |
β Elbaite Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) Habit: unterminated, elongated prisms Colour: pink; rarely green, blue or watermelon |
β Fluorapatite Formula: Ca5(PO4)3F Colour: pale green to green-gray, yellow-green , dark blue Fluorescence: yellow Description: Mostly massive and associated with almandine. |
β Fluorapatite var. Manganese-bearing Fluorapatite Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
β Gypsum Formula: CaSO4 · 2H2O References: |
β Halloysite Formula: Al2(Si2O5)(OH)4 Habit: earthy to waxy masses Colour: tan Description: Alteration of pollucite, so occurs as thin crusts and veins with elbaite, pollucite, cleavelandite. |
β 'Hornblende Root Name Group' Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
β 'Indicolite' Formula: A(D3)G6(T6O18)(BO3)3X3Z References: |
βͺ 'Lepidolite' Habit: tapered columnar and granular Colour: purple Description: fine crystals tapering from a point at one end to a larger, curved, somewhat hemispherical crystallization at the other end of the crystal. It appears to have grown in wedge shaped areas between interlocking crystal plates of cleavelandite. Some of the hemispherical terminations may be as much as two or three inches across at the large end. They are noted in cross section to be made up of many curved crystalline plates of lepidolite all curved over each other, so that in pealing off layers of this mica, they would all appear with hemispherically curved surfaces. |
β Formula: Mn3+O(OH) Description: No data. |
β Meta-autunite Formula: Ca(UO2)2(PO4)2 · 6H2O Colour: pale yellow Fluorescence: green Description: Thin coatings with bright fluorescence in both long and short wave UV. References: |
β Microcline Formula: K(AlSi3O8) Description: perthite crystals up to 1 foot in diameter |
β 'Microlite Group' Formula: A2-mTa2X6-wZ-n Habit: octahedral Colour: yellow to dark green to black Description: In the mineralized core zone, up to 0.5 inch. |
β Montebrasite Formula: LiAl(PO4)(OH) Colour: white Description: locally in the core zone in crystals which commonly show a good but rough crystal form. Some of its crystals reach three or four inches in length. The outer crystal edges are usually altered on the surfaces to a tan colored alteration product. |
β Montmorillonite Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O References: |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 Description: Scattered books of muscovite average 1 inch across by 1/2 inch thick. |
β Opal Formula: SiO2 · nH2O References: |
β Opal var. Opal-AN Formula: SiO2 · nH2O Colour: colorless Fluorescence: green Description: nearly invisible coatings that fluoresce bright green References: |
β Petalite Formula: LiAl(Si4O10) Habit: massive Colour: white with brown rind - overall tan appearance Description: massive, embedded in pollucite References: |
βͺ Pollucite Formula: (Cs,Na)2(Al2Si4O12) · 2H2O Colour: colorless Description: In the lithium mineral zone of the western pegmatite. Masses and cleavages to as much as a foot in length and six to eight inches in width have been recovered. It is closely associated with spodumene crystals, rubellite and other colored lithium tourmalines, caesium beryl, lepidolite, montebrasite, blue and white cleavelandite, and smoky quartz. It has a platy structure or it occurs as fractured masses, the fractures often being filled by dull white chalcedony. |
β Formula: Mn4+O2 Description: No pyrolusite dendrite or staining in a granite pegmatite in the world has been verified as pyrolusite. The name was a mistake in the nineteenth century which has been widely publicized. |
β Quartz Formula: SiO2 Colour: colorless to smoky |
β Quartz var. Chalcedony Formula: SiO2 Colour: white Fluorescence: pale yellow-white Description: filling fractures in pollucite masses. As "snowflake" inclusions in pollucite. |
β Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) Habit: unterminated, elongated prisms Colour: black Description: common in the wall zone of the western pegmatite References: |
β Spessartine Formula: Mn2+3Al2(SiO4)3 References: |
β Spodumene Formula: LiAlSi2O6 Colour: tan to lavender Fluorescence: pale orange-pink Description: broad, lath-like crystals several inches wide and thick, and up to a foot and a half in length. Found in the core zone of the western pegmatite. "Spodumene including gem kunzite and hiddenite was present in logs up to 1 foot by 4 inches comprising about 1.0 percent of the lepidolite enriched areas." (Barton and Goldsmith 1968) |
β Spodumene var. Kunzite Formula: LiAlSi2O6 Habit: elongated prisms Colour: lavender Fluorescence: pale orange-pink Description: Found in the cores of normal spodumene References: |
β Sulphur Formula: S8 References: |
βͺ Tantalite-(Mn) Formula: Mn2+Ta2O6 Habit: subhedral; highly modified, flattened, and distorted Colour: red-brown, reddish orange Description: occurs as small browish-red to reddish-orange, and orange-brown, highly modified, flattened, and distorted crystals to about two inches in length. They are often partially or completely embedded in spodumene cleavelandite, lepidolite, or quartz. A characteristic occurrence is as small crystals grown upon or near to the outer surfaces of spodumene crystals, or partially enclosed within them but projecting above the edges of the spodumene crystals. The flattened tantalite crystals look very much like flattened crystals of zircon but an x-ray powder photograph revealed that they are tantalite. |
β Topaz Formula: Al2(SiO4)(F,OH)2 Colour: blue Description: Practically nonexistent. Only two, microscopic, blue etched crystals, barely visible to the naked eye were found in an extremely small vug in the cleavelandite of the lithium mineral zone. |
β 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z |
β 'Tourmaline var. Rubellite' Formula: A(D3)G6(T6O18)(BO3)3X3Z Habit: unterminated, elongated prisms Colour: pink Description: Rubellite is the most prevalent colored tourmaline in the lithium mineral zone. The crystals are not terminated. They occur to three quarters of an inch in diameter and to six inches or so in length together with blue and white cleavelandite, yellow microlite, lepidolite, beryl, montebrasite, pollucite, spodumene, and quartz. They are often noted to be bent or twisted with small fractures healed by quartz or cleavelandite. Rubellite has often been noted in the interstitial areas between plates of cleavelandite and some of the broken sections are completely enclosed by cleavelandite, lepidolite, and other minerals in the core of the pegmatite. |
β 'Tourmaline var. Watermelon Tourmaline' Formula: A(D3)G6(T6O18)(BO3)3X3Z Habit: unterminated, elongated prisms Colour: pink core, pale green rims Description: In the mineralized core zone. References: |
β Uraninite Formula: UO2 References: |
β Uranophane Formula: Ca(UO2)2(SiO3OH)2 · 5H2O References: |
β Wodginite Formula: Mn2+Sn4+Ta2O8 Habit: granular to subhedral monoclinic Colour: dark reddish-brown with iridescence Description: Iridescent, translucent, dark brownish-red grains to subhedral crystals less than 1 cm in granular lepidolite/smoky quartz/cleavelandite matrix. A few grains have been positively identified and it is likely that many other "reddish" minerals purported to be tantalite or cassiterite are actually wodginite (as was the case at the similar and nearby Strickland Quarry for decades). References: |
β Zircon Formula: Zr(SiO4) Habit: elongated prisms Colour: brown Description: tiny crystals |
β Zircon var. Cyrtolite Formula: Zr[(SiO4),(OH)4] References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Sulphur | 1.CC.05 | S8 |
Group 4 - Oxides and Hydroxides | |||
β | 'Microlite Group' | 4.00. | A2-mTa2X6-wZ-n |
β | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
β | 4.DA.05 | SiO2 | |
β | Opal var. Opal-AN | 4.DA.10 | SiO2 Β· nH2O |
β | 4.DA.10 | SiO2 Β· nH2O | |
β | Cassiterite | 4.DB.05 | SnO2 |
β | Pyrolusite ? | 4.DB.05 | Mn4+O2 |
β | Tantalite-(Mn) | 4.DB.35 | Mn2+Ta2O6 |
β | Columbite-(Fe) | 4.DB.35 | Fe2+Nb2O6 |
β | Wodginite | 4.DB.40 | Mn2+Sn4+Ta2O8 |
β | Uraninite | 4.DL.05 | UO2 |
β | Manganite ? | 4.FD.15 | Mn3+O(OH) |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Gypsum | 7.CD.40 | CaSO4 Β· 2H2O |
Group 8 - Phosphates, Arsenates and Vanadates | |||
β | Montebrasite | 8.BB.05 | LiAl(PO4)(OH) |
β | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
β | var. Manganese-bearing Fluorapatite | 8.BN.05 | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
β | Autunite | 8.EB.05 | Ca(UO2)2(PO4)2 Β· 10-12H2O |
β | Meta-autunite | 8.EB.10 | Ca(UO2)2(PO4)2 Β· 6H2O |
Group 9 - Silicates | |||
β | Spessartine | 9.AD.25 | Mn2+3Al2(SiO4)3 |
β | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
β | Zircon var. Cyrtolite | 9.AD.30 | Zr[(SiO4),(OH)4] |
β | 9.AD.30 | Zr(SiO4) | |
β | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
β | Uranophane | 9.AK.15 | Ca(UO2)2(SiO3OH)2 Β· 5H2O |
β | Allanite-(Ce) | 9.BG.05b | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
β | Beryl var. Goshenite | 9.CJ.05 | Be3Al2(Si6O18) |
β | var. Aquamarine | 9.CJ.05 | Be3Al2Si6O18 |
β | 9.CJ.05 | Be3Al2(Si6O18) | |
β | var. Heliodor | 9.CJ.05 | Be3Al2(Si6O18) |
β | var. Morganite | 9.CJ.05 | Be3Al2(Si6O18) |
β | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
β | Elbaite | 9.CK.05 | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
β | Spodumene var. Kunzite | 9.DA.30 | LiAlSi2O6 |
β | 9.DA.30 | LiAlSi2O6 | |
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | Annite | 9.EC.20 | KFe2+3(AlSi3O10)(OH)2 |
β | Montmorillonite | 9.EC.40 | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 Β· nH2O |
β | Halloysite | 9.ED.10 | Al2(Si2O5)(OH)4 |
β | Petalite | 9.EF.05 | LiAl(Si4O10) |
β | Microcline | 9.FA.30 | K(AlSi3O8) |
β | Albite var. Cleavelandite | 9.FA.35 | Na(AlSi3O8) |
β | 9.FA.35 | Na(AlSi3O8) | |
β | Pollucite | 9.GB.05 | (Cs,Na)2(Al2Si4O12) Β· 2H2O |
Unclassified | |||
β | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
β | 'var. Rubellite' | - | A(D3)G6(T6O18)(BO3)3X3Z |
β | 'Lepidolite' | - | |
β | 'Indicolite' | - | A(D3)G6(T6O18)(BO3)3X3Z |
β | 'Columbite-(Fe)-Columbite-(Mn) Series' | - | |
β | 'Hornblende Root Name Group' | - | β»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
β | 'Tourmaline var. Watermelon Tourmaline' | - | A(D3)G6(T6O18)(BO3)3X3Z |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
H | β Annite | KFe32+(AlSi3O10)(OH)2 |
H | β Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
H | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
H | β Gypsum | CaSO4 · 2H2O |
H | β Halloysite | Al2(Si2O5)(OH)4 |
H | β Opal var. Opal-AN | SiO2 · nH2O |
H | β Manganite | Mn3+O(OH) |
H | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
H | β Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
H | β Montebrasite | LiAl(PO4)(OH) |
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
H | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
H | β Opal | SiO2 · nH2O |
H | β Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
H | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
H | β Topaz | Al2(SiO4)(F,OH)2 |
H | β Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
H | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
H | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Li | Lithium | |
Li | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
Li | β Spodumene var. Kunzite | LiAlSi2O6 |
Li | β Montebrasite | LiAl(PO4)(OH) |
Li | β Petalite | LiAl(Si4O10) |
Li | β Spodumene | LiAlSi2O6 |
Be | Beryllium | |
Be | β Beryl var. Aquamarine | Be3Al2Si6O18 |
Be | β Beryl | Be3Al2(Si6O18) |
Be | β Beryl var. Morganite | Be3Al2(Si6O18) |
Be | β Beryl var. Heliodor | Be3Al2(Si6O18) |
Be | β Beryl var. Goshenite | Be3Al2(Si6O18) |
B | Boron | |
B | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
B | β Indicolite | A(D3)G6(T6O18)(BO3)3X3Z |
B | β Tourmaline var. Rubellite | A(D3)G6(T6O18)(BO3)3X3Z |
B | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
B | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
B | β Tourmaline var. Watermelon Tourmaline | A(D3)G6(T6O18)(BO3)3X3Z |
O | Oxygen | |
O | β Albite | Na(AlSi3O8) |
O | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
O | β Annite | KFe32+(AlSi3O10)(OH)2 |
O | β Beryl var. Aquamarine | Be3Al2Si6O18 |
O | β Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
O | β Almandine | Fe32+Al2(SiO4)3 |
O | β Beryl | Be3Al2(Si6O18) |
O | β Cassiterite | SnO2 |
O | β Quartz var. Chalcedony | SiO2 |
O | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
O | β Columbite-(Fe) | Fe2+Nb2O6 |
O | β Fluorapatite | Ca5(PO4)3F |
O | β Gypsum | CaSO4 · 2H2O |
O | β Halloysite | Al2(Si2O5)(OH)4 |
O | β Opal var. Opal-AN | SiO2 · nH2O |
O | β Indicolite | A(D3)G6(T6O18)(BO3)3X3Z |
O | β Spodumene var. Kunzite | LiAlSi2O6 |
O | β Manganite | Mn3+O(OH) |
O | β Tantalite-(Mn) | Mn2+Ta2O6 |
O | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
O | β Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
O | β Microcline | K(AlSi3O8) |
O | β Montebrasite | LiAl(PO4)(OH) |
O | β Beryl var. Morganite | Be3Al2(Si6O18) |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
O | β Opal | SiO2 · nH2O |
O | β Petalite | LiAl(Si4O10) |
O | β Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
O | β Pyrolusite | Mn4+O2 |
O | β Quartz | SiO2 |
O | β Tourmaline var. Rubellite | A(D3)G6(T6O18)(BO3)3X3Z |
O | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
O | β Spessartine | Mn32+Al2(SiO4)3 |
O | β Spodumene | LiAlSi2O6 |
O | β Topaz | Al2(SiO4)(F,OH)2 |
O | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
O | β Uraninite | UO2 |
O | β Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
O | β Wodginite | Mn2+Sn4+Ta2O8 |
O | β Zircon | Zr(SiO4) |
O | β Beryl var. Heliodor | Be3Al2(Si6O18) |
O | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
O | β Beryl var. Goshenite | Be3Al2(Si6O18) |
O | β Albite var. Cleavelandite | Na(AlSi3O8) |
O | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
O | β Tourmaline var. Watermelon Tourmaline | A(D3)G6(T6O18)(BO3)3X3Z |
F | Fluorine | |
F | β Fluorapatite | Ca5(PO4)3F |
F | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
F | β Topaz | Al2(SiO4)(F,OH)2 |
F | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Na | Sodium | |
Na | β Albite | Na(AlSi3O8) |
Na | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
Na | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Na | β Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
Na | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Na | β Albite var. Cleavelandite | Na(AlSi3O8) |
Mg | Magnesium | |
Mg | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Al | Aluminium | |
Al | β Albite | Na(AlSi3O8) |
Al | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
Al | β Annite | KFe32+(AlSi3O10)(OH)2 |
Al | β Beryl var. Aquamarine | Be3Al2Si6O18 |
Al | β Almandine | Fe32+Al2(SiO4)3 |
Al | β Beryl | Be3Al2(Si6O18) |
Al | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
Al | β Halloysite | Al2(Si2O5)(OH)4 |
Al | β Spodumene var. Kunzite | LiAlSi2O6 |
Al | β Microcline | K(AlSi3O8) |
Al | β Montebrasite | LiAl(PO4)(OH) |
Al | β Beryl var. Morganite | Be3Al2(Si6O18) |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Al | β Petalite | LiAl(Si4O10) |
Al | β Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
Al | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Al | β Spessartine | Mn32+Al2(SiO4)3 |
Al | β Spodumene | LiAlSi2O6 |
Al | β Topaz | Al2(SiO4)(F,OH)2 |
Al | β Beryl var. Heliodor | Be3Al2(Si6O18) |
Al | β Beryl var. Goshenite | Be3Al2(Si6O18) |
Al | β Albite var. Cleavelandite | Na(AlSi3O8) |
Al | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Si | Silicon | |
Si | β Albite | Na(AlSi3O8) |
Si | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
Si | β Annite | KFe32+(AlSi3O10)(OH)2 |
Si | β Beryl var. Aquamarine | Be3Al2Si6O18 |
Si | β Almandine | Fe32+Al2(SiO4)3 |
Si | β Beryl | Be3Al2(Si6O18) |
Si | β Quartz var. Chalcedony | SiO2 |
Si | β Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
Si | β Halloysite | Al2(Si2O5)(OH)4 |
Si | β Opal var. Opal-AN | SiO2 · nH2O |
Si | β Spodumene var. Kunzite | LiAlSi2O6 |
Si | β Microcline | K(AlSi3O8) |
Si | β Beryl var. Morganite | Be3Al2(Si6O18) |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Si | β Opal | SiO2 · nH2O |
Si | β Petalite | LiAl(Si4O10) |
Si | β Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
Si | β Quartz | SiO2 |
Si | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Si | β Spessartine | Mn32+Al2(SiO4)3 |
Si | β Spodumene | LiAlSi2O6 |
Si | β Topaz | Al2(SiO4)(F,OH)2 |
Si | β Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Si | β Zircon | Zr(SiO4) |
Si | β Beryl var. Heliodor | Be3Al2(Si6O18) |
Si | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
Si | β Beryl var. Goshenite | Be3Al2(Si6O18) |
Si | β Albite var. Cleavelandite | Na(AlSi3O8) |
Si | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
P | Phosphorus | |
P | β Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
P | β Fluorapatite | Ca5(PO4)3F |
P | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
P | β Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
P | β Montebrasite | LiAl(PO4)(OH) |
S | Sulfur | |
S | β Gypsum | CaSO4 · 2H2O |
S | β Sulphur | S8 |
Cl | Chlorine | |
Cl | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
Cl | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
K | Potassium | |
K | β Annite | KFe32+(AlSi3O10)(OH)2 |
K | β Microcline | K(AlSi3O8) |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Ca | Calcium | |
Ca | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
Ca | β Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
Ca | β Fluorapatite | Ca5(PO4)3F |
Ca | β Gypsum | CaSO4 · 2H2O |
Ca | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
Ca | β Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
Ca | β Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
Ca | β Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Ca | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Mn | Manganese | |
Mn | β Manganite | Mn3+O(OH) |
Mn | β Tantalite-(Mn) | Mn2+Ta2O6 |
Mn | β Fluorapatite var. Manganese-bearing Fluorapatite | (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH) |
Mn | β Pyrolusite | Mn4+O2 |
Mn | β Spessartine | Mn32+Al2(SiO4)3 |
Mn | β Wodginite | Mn2+Sn4+Ta2O8 |
Fe | Iron | |
Fe | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
Fe | β Annite | KFe32+(AlSi3O10)(OH)2 |
Fe | β Almandine | Fe32+Al2(SiO4)3 |
Fe | β Columbite-(Fe) | Fe2+Nb2O6 |
Fe | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Zr | Zirconium | |
Zr | β Zircon | Zr(SiO4) |
Zr | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
Nb | Niobium | |
Nb | β Columbite-(Fe) | Fe2+Nb2O6 |
Sn | Tin | |
Sn | β Cassiterite | SnO2 |
Sn | β Wodginite | Mn2+Sn4+Ta2O8 |
Cs | Caesium | |
Cs | β Pollucite | (Cs,Na)2(Al2Si4O12) · 2H2O |
Ce | Cerium | |
Ce | β Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
Ta | Tantalum | |
Ta | β Tantalite-(Mn) | Mn2+Ta2O6 |
Ta | β Microlite Group | A2-mTa2X6-wZ-n |
Ta | β Wodginite | Mn2+Sn4+Ta2O8 |
U | Uranium | |
U | β Autunite | Ca(UO2)2(PO4)2 · 10-12H2O |
U | β Meta-autunite | Ca(UO2)2(PO4)2 · 6H2O |
U | β Uraninite | UO2 |
U | β Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Ganderia DomainDomain
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Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA