Roncari Quarry, East Granby, Hartford County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Roncari Quarry | Quarry |
| East Granby | Town |
| Hartford County | County |
| Connecticut | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41ยฐ 56' 16'' North , 72ยฐ 44' 21'' West
Latitude & Longitude (decimal):
Type:
Kรถppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Tariffville | 1,324 (2017) | 3.7km |
| Salmon Brook | 2,324 (2017) | 5.1km |
| Simsbury Center | 5,836 (2017) | 8.7km |
| Suffield Depot | 1,325 (2017) | 8.8km |
| Windsor Locks | 12,498 (2017) | 9.3km |
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 |
|---|---|---|
| Connecticut Valley Mineral Club | Springfield, Massachusetts | 22km |
| Bristol Gem & Mineral Club | Bristol, Connecticut | 34km |
| Lapidary and Mineral Society of Central Connecticut | Meriden, Connecticut | 45km |
Other/historical names associated with this locality:
Tilcon Quarry; Tilcon East Granby Quarry
Quarry in the Jurassic (205 Ma) Holyoke Basalt. Mineralization occurs in gas vesicles (pockets) and in fault zones, some of them heavily brecciated and cemented with fine-grained, tufa-like, layered calcite deposits. Many minerals show replacement and/or pseudomorphing. Noted for excellent datolite crystals.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
21 valid minerals. 2 erroneous literature entries.
* - Minerals that have never been found, but their existence is inferred in some way (e.g. from pseudomorphs)
Detailed Mineral List:
| โ Anhydrite Formula: CaSO4 Habit: tabular voids Description: Tabular voids in later crystallized minerals are very common here, as in all Connecticut trap rock quarries. Nearly all anhydrite in the basalt dissolved away leaving these voids. References: |
| โช 'Apophyllite Group' Formula: AB4[Si8O22]X ยท 8H2O Habit: tabular, in spherical aggregates Colour: white to creamy Description: Aggregates of tabular crystals can reach 3 to 4 cm. This habit is characteristic for this locality, other area trap rock quarries have bipyramidal crystals. |
| โ Aragonite Formula: CaCO3 |
| โช Babingtonite Formula: Ca2Fe2+Fe3+Si5O14(OH) Habit: blocky to wedge-shaped Colour: black Description: Crystals to a little over 1 cm, surfaces are mix of smooth and lustrous to rough textures. Commonly associated with prehnite, calcite and quartz. References: |
| โ Formula: BaSO4 Description: Mistaken identification of calcite crystals twinned on a face of the shallow negative rhombohedron and showing much growth distortion so that they look tabular. |
| โช Calcite Formula: CaCO3 Habit: rhombohedral, scalenohedral, tabular butterfly twins on {01bar12} Colour: white, pale rose Fluorescence: orange-red Description: A variety of forms and sizes occur, most commonly rhombohedral and scalenohedral, with rhombic overgrowths up to 4 cm on scalenohedral cores showing a pale rose color and frosty luster associated with sprays of needle quartz epimorphic on dissolved anhydrite. Tabular butterfly twins to 5mm or so also occur. |
| โ Celestine Formula: SrSO4 Habit: tabular Colour: colorless to very pale blue Description: Crystals typically small, <1.5 cm. References: |
| โ 'Chalcodite' Formula: K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 References: |
| โ Chalcopyrite Formula: CuFeS2 |
| โ 'Chlorite Group' |
| โ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 References: |
| โช Datolite Formula: CaB(SiO4)(OH) Habit: complex prisms with chisel-point terminations Colour: pale apple green Description: Gas vesicles rich in crystals lining the walls were once abundant. Never found singly. Crystals can reach over 2.5 cm, larger ones typically transparent, smaller crystals translucent to opaque - grading to porcelaineous crusts. Excellent specimens in major museums. |
| โ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| โช Fluorapophyllite-(K) Formula: KCa4(Si8O20)(F,OH) ยท 8H2O Habit: tabular, in spherical aggregates Colour: white to creamy Description: Aggregates of tabular crystals can reach 3 to 4 cm. This habit is characteristic for this locality, other area trap rock quarries have mostly bipyramidal crystals. References: |
| โ Fluorite Formula: CaF2 References: |
| โ Galena Formula: PbS Habit: skeletal cuboctahedral Colour: gray Description: A single 12mm skeletal cuboctahedral crystal is known, associated with datolite and yellow calcite. References: |
| โ Goethite Formula: Fe3+O(OH) References: |
| โ Gypsum Formula: CaSO4 ยท 2H2O References: |
| โ Gypsumย var. Selenite Formula: CaSO4 ยท 2H2O References: |
| โช Hematite Formula: Fe2O3 Habit: coatings, botryoidal aggregates, rosettes Colour: specular to rusty-red Description: Mostly as rusty-red coatings on calcite and quartz, tiny blebs or as specular to rusty-red rosettes to several mm. References: |
| โ Hematiteย var. Iron Rose Formula: Fe2O3 References: |
| โ ' Formula: Ca2XFe3+2[Si2O6(OH)][SiO4](OH)2A Habit: isolated botryoidal or "bow-tie" radiating crystal aggregates. Colour: very dark green Description: Identified by Raman spectroscopy as pumpellyite. References: |
| โ Malachite Formula: Cu2(CO3)(OH)2 Habit: massive to acicular Colour: green Description: Associated with chrysocolla. References: |
| โ 'Manganese Oxides' References: |
| โ 'Manganese Oxidesย var. Manganese Dendrites' References: |
| โ 'Petroleumย var. Bitumen' Habit: amorphous Colour: black Description: Brittle, glassy, conchoidal fracture with sharp edges. Found in faults and pockets. Dessicated residue from the upward migration of crude oil from stratigraphically lower, petroleum-rich black shales in the Shuttle Meadow Formation. |
| โช Prehnite Formula: Ca2Al2Si3O10(OH)2 Habit: Botryoidal to conical aggregates of tabular crystals Colour: various shades of green |
| โช 'Pumpellyite Group' Formula: Ca2XZ2[Si2O6(OH)][SiO4](OH)2A Habit: microfibrous botryoids, crusts, bowties Colour: blue-green, dark olive green to black Description: Few specimens have been confirmed by analyses to differentiate it from several other possible pumpellyite group minerals. References: |
| โ 'Pumpellyite Subgroup' Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A Habit: isolated botryoidal or "bow-tie" radiating crystal aggregates. Colour: very dark green Description: As late-forming micro-crystal aggregates in pockets. Thought to be julgoldite but identified as pumpellyite using Raman spectroscopy by Paul Bartholomew, U. of New Haven, 2014. References: |
| โ Pyrite Formula: FeS2 |
| โ 'Pyrobitumenย var. Albertite' References: |
| โช Quartz Formula: SiO2 Habit: elongated prismatic, Cumberland habit Colour: colorless, milky, smoky Description: Typically associated with calcite, datolite or prehnite, crystals range from tiny ones epimorphing dissolved anhydrite (forming sparkling columns to a several cm long) to prismatic ones to 15 cm. Cumberland habit crystals typcially up to 1-2 cm found in groups or singly. |
| โ Quartzย var. Amethyst Formula: SiO2 |
| โ Quartzย var. Milky Quartz Formula: SiO2 References: |
| โ Quartzย var. Smoky Quartz Formula: SiO2 References: |
| โ Sphalerite Formula: ZnS References: |
| โ 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] ยท nH2O References: |
| โ Stilpnomelane Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| โ | Sphalerite | 2.CB.05a | ZnS |
| โ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| โ | Galena | 2.CD.10 | PbS |
| โ | Pyrite | 2.EB.05a | FeS2 |
| Group 3 - Halides | |||
| โ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| โ | Goethite | 4.00. | Fe3+O(OH) |
| โ | Hematite | 4.CB.05 | Fe2O3 |
| โ | var. Iron Rose | 4.CB.05 | Fe2O3 |
| โ | Quartz var. Amethyst | 4.DA.05 | SiO2 |
| โ | 4.DA.05 | SiO2 | |
| โ | var. Smoky Quartz | 4.DA.05 | SiO2 |
| โ | var. Milky Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| โ | Calcite | 5.AB.05 | CaCO3 |
| โ | Aragonite | 5.AB.15 | CaCO3 |
| โ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| โ | Anhydrite ? | 7.AD.30 | CaSO4 |
| โ | Baryte ? | 7.AD.35 | BaSO4 |
| โ | Celestine | 7.AD.35 | SrSO4 |
| โ | Gypsum | 7.CD.40 | CaSO4 ยท 2H2O |
| โ | var. Selenite | 7.CD.40 | CaSO4 ยท 2H2O |
| Group 9 - Silicates | |||
| โ | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| โ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| โ | Babingtonite | 9.DK.05 | Ca2Fe2+Fe3+Si5O14(OH) |
| โ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| โ | Fluorapophyllite-(K) | 9.EA.15 | KCa4(Si8O20)(F,OH) ยท 8H2O |
| โ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
| โ | Stilpnomelane | 9.EG.40 | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| โ | 'Chalcodite' | 9.EG.40 | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| Unclassified | |||
| โ | 'Apophyllite Group' | - | AB4[Si8O22]X ยท 8H2O |
| โ | 'Chlorite Group' | - | |
| โ | 'Pumpellyite Subgroup' | - | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| โ | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] ยท nH2O |
| โ | 'Petroleum var. Bitumen' | - | |
| โ | 'Pyrobitumen var. Albertite' | - | |
| โ | 'Manganese Oxides var. Manganese Dendrites' | - | |
| โ | '' | - | |
| โ | 'Pumpellyite Group' | - | Ca2XZ2[Si2O6(OH)][SiO4](OH)2A |
| โ | 'Julgoldite Subgroup' ? | - | Ca2XFe3+2[Si2O6(OH)][SiO4](OH)2A |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | โ Apophyllite Group | AB4[Si8O22]X ยท 8H2O |
| H | โ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| H | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
| H | โ Datolite | CaB(SiO4)(OH) |
| H | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | โ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) ยท 8H2O |
| H | โ Goethite | Fe3+O(OH) |
| H | โ Gypsum | CaSO4 ยท 2H2O |
| H | โ Malachite | Cu2(CO3)(OH)2 |
| H | โ Prehnite | Ca2Al2Si3O10(OH)2 |
| H | โ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| H | โ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] ยท nH2O |
| H | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| H | โ Gypsum var. Selenite | CaSO4 ยท 2H2O |
| H | โ Pumpellyite Group | Ca2XZ2[Si2O6(OH)][SiO4](OH)2A |
| H | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| H | โ Julgoldite Subgroup | Ca2XFe23+[Si2O6(OH)][SiO4](OH)2A |
| B | Boron | |
| B | โ Datolite | CaB(SiO4)(OH) |
| C | Carbon | |
| C | โ Aragonite | CaCO3 |
| C | โ Calcite | CaCO3 |
| C | โ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | โ Quartz var. Amethyst | SiO2 |
| O | โ Anhydrite | CaSO4 |
| O | โ Apophyllite Group | AB4[Si8O22]X ยท 8H2O |
| O | โ Aragonite | CaCO3 |
| O | โ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| O | โ Baryte | BaSO4 |
| O | โ Calcite | CaCO3 |
| O | โ Celestine | SrSO4 |
| O | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
| O | โ Datolite | CaB(SiO4)(OH) |
| O | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | โ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) ยท 8H2O |
| O | โ Goethite | Fe3+O(OH) |
| O | โ Gypsum | CaSO4 ยท 2H2O |
| O | โ Hematite | Fe2O3 |
| O | โ Malachite | Cu2(CO3)(OH)2 |
| O | โ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | โ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| O | โ Quartz | SiO2 |
| O | โ Quartz var. Smoky Quartz | SiO2 |
| O | โ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] ยท nH2O |
| O | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| O | โ Gypsum var. Selenite | CaSO4 ยท 2H2O |
| O | โ Quartz var. Milky Quartz | SiO2 |
| O | โ Hematite var. Iron Rose | Fe2O3 |
| O | โ Pumpellyite Group | Ca2XZ2[Si2O6(OH)][SiO4](OH)2A |
| O | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| O | โ Julgoldite Subgroup | Ca2XFe23+[Si2O6(OH)][SiO4](OH)2A |
| F | Fluorine | |
| F | โ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) ยท 8H2O |
| F | โ Fluorite | CaF2 |
| Na | Sodium | |
| Na | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| Mg | Magnesium | |
| Mg | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| Mg | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| Al | Aluminium | |
| Al | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
| Al | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | โ Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | โ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Al | โ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] ยท nH2O |
| Al | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| Al | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| Si | Silicon | |
| Si | โ Quartz var. Amethyst | SiO2 |
| Si | โ Apophyllite Group | AB4[Si8O22]X ยท 8H2O |
| Si | โ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Si | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
| Si | โ Datolite | CaB(SiO4)(OH) |
| Si | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | โ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) ยท 8H2O |
| Si | โ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | โ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Si | โ Quartz | SiO2 |
| Si | โ Quartz var. Smoky Quartz | SiO2 |
| Si | โ Stilbite Subgroup | M6-7[Al8-9Si27-28O72] ยท nH2O |
| Si | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| Si | โ Quartz var. Milky Quartz | SiO2 |
| Si | โ Pumpellyite Group | Ca2XZ2[Si2O6(OH)][SiO4](OH)2A |
| Si | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| Si | โ Julgoldite Subgroup | Ca2XFe23+[Si2O6(OH)][SiO4](OH)2A |
| S | Sulfur | |
| S | โ Anhydrite | CaSO4 |
| S | โ Baryte | BaSO4 |
| S | โ Celestine | SrSO4 |
| S | โ Chalcopyrite | CuFeS2 |
| S | โ Galena | PbS |
| S | โ Gypsum | CaSO4 ยท 2H2O |
| S | โ Pyrite | FeS2 |
| S | โ Sphalerite | ZnS |
| S | โ Gypsum var. Selenite | CaSO4 ยท 2H2O |
| K | Potassium | |
| K | โ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) ยท 8H2O |
| K | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| K | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| Ca | Calcium | |
| Ca | โ Anhydrite | CaSO4 |
| Ca | โ Aragonite | CaCO3 |
| Ca | โ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Ca | โ Calcite | CaCO3 |
| Ca | โ Datolite | CaB(SiO4)(OH) |
| Ca | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | โ Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) ยท 8H2O |
| Ca | โ Fluorite | CaF2 |
| Ca | โ Gypsum | CaSO4 ยท 2H2O |
| Ca | โ Prehnite | Ca2Al2Si3O10(OH)2 |
| Ca | โ Pumpellyite Subgroup | Ca2XAl2[Si2O6(OH)][SiO4](OH)2A |
| Ca | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| Ca | โ Gypsum var. Selenite | CaSO4 ยท 2H2O |
| Ca | โ Pumpellyite Group | Ca2XZ2[Si2O6(OH)][SiO4](OH)2A |
| Ca | โ Julgoldite Subgroup | Ca2XFe23+[Si2O6(OH)][SiO4](OH)2A |
| Fe | Iron | |
| Fe | โ Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| Fe | โ Chalcopyrite | CuFeS2 |
| Fe | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | โ Goethite | Fe3+O(OH) |
| Fe | โ Hematite | Fe2O3 |
| Fe | โ Pyrite | FeS2 |
| Fe | โ Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 ยท nH2O |
| Fe | โ Hematite var. Iron Rose | Fe2O3 |
| Fe | โ Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| Fe | โ Julgoldite Subgroup | Ca2XFe23+[Si2O6(OH)][SiO4](OH)2A |
| Cu | Copper | |
| Cu | โ Chalcopyrite | CuFeS2 |
| Cu | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
| Cu | โ Malachite | Cu2(CO3)(OH)2 |
| Zn | Zinc | |
| Zn | โ Sphalerite | ZnS |
| Sr | Strontium | |
| Sr | โ Celestine | SrSO4 |
| Ba | Barium | |
| Ba | โ Baryte | BaSO4 |
| Pb | Lead | |
| Pb | โ Galena | PbS |
Mindat Articles
"Barf" Datolite by Paul GilmoreOther Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
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References
ย
Roncari Quarry, East Granby, Hartford County, Connecticut, USA