North Branford Quarry, North Branford, New Haven County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| North Branford Quarry | Quarry |
| North Branford | Town |
| New Haven County | County |
| Connecticut | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 20' 26'' North , 72° 47' 38'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| North Branford | 14,454 (2017) | 2.7km |
| Branford | 29,438 (2017) | 7.0km |
| Branford Center | 5,819 (2017) | 7.3km |
| North Haven | 24,093 (2017) | 7.8km |
| East Haven | 29,257 (2017) | 9.5km |
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 |
|---|---|---|
| New Haven Mineral Club | New Haven, Connecticut | 12km |
| Lapidary and Mineral Society of Central Connecticut | Meriden, Connecticut | 22km |
| Bristol Gem & Mineral Club | Bristol, Connecticut | 39km |
| Long Island Mineral & Geology Society | Jamesport, New York | 47km |
Mindat Locality ID:
211413
Long-form identifier:
mindat:1:2:211413:5
GUID (UUID V4):
ca301c8f-95d9-463e-8dba-88f4fd5fb0b5
Other/historical names associated with this locality:
New Haven Trap Rock Company Quarry; Tilcon-Tomasso Quarry; Tilcon North Branford Quarry
Started in 1914 by the New Haven Trap Rock Company, the still operating quarry has followed the west face of Totoket Mountain in Jurassic Holyoke Basalt for 4.5 km, producing one of the longest continuous quarry faces in the world. The company changed ownership or merged over the years and as of 2017 is operated by Tilcon Connecticut, Inc. Despite its size, there is very little mineralization.
The quarry exposes the full 200 m thickness of the huge Holyoke Basalt lava flow, part of the CAMP (Central Atlantic magmatic province) extrusion 206 million years ago during the rifting of Pangea - the largest single flow on land. It took 100 years to crystallize and much longer to cool, undergoing compositional differentiation as it did so, with a few meters of ferrodiorite composition near the center and cm-thick final layers showing granophyric composition. See details in Philpotts (2010).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Aragonite Formula: CaCO3 |
| β Calcite Formula: CaCO3 |
| β Datolite Formula: CaB(SiO4)(OH) References: |
| β Pyrite Formula: FeS2 Description: Small crystals occurring on rock joint surfaces References: |
| β Quartz Formula: SiO2 References: |
| β Quartz var. Agate References: |
| β Quartz var. Chalcedony Formula: SiO2 References: |
| β 'Stilbite Subgroup' Formula: M6-7[Al8-9Si27-28O72] · nH2O Habit: Micro tabular prismatic Colour: white References: |
| β Stilpnomelane Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O Habit: Micro aggregates. Colour: Golden brown References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz var. Agate | 4.DA.05 | SiO2 |
| β | var. Chalcedony | 4.DA.05 | SiO2 |
| β | 4.DA.05 | SiO2 | |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Aragonite | 5.AB.15 | CaCO3 |
| Group 9 - Silicates | |||
| β | Datolite | 9.AJ.20 | CaB(SiO4)(OH) |
| β | Stilpnomelane | 9.EG.40 | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 Β· nH2O |
| Unclassified | |||
| β | 'Stilbite Subgroup' | - | M6-7[Al8-9Si27-28O72] Β· nH2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Datolite | CaB(SiO4)(OH) |
| H | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| H | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| B | Boron | |
| B | β Datolite | CaB(SiO4)(OH) |
| C | Carbon | |
| C | β Aragonite | CaCO3 |
| C | β Calcite | CaCO3 |
| O | Oxygen | |
| O | β Aragonite | CaCO3 |
| O | β Calcite | CaCO3 |
| O | β Quartz var. Chalcedony | SiO2 |
| O | β Datolite | CaB(SiO4)(OH) |
| O | β Quartz | SiO2 |
| O | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| O | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Na | Sodium | |
| Na | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Mg | Magnesium | |
| Mg | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Al | Aluminium | |
| Al | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Al | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Si | Silicon | |
| Si | β Quartz var. Chalcedony | SiO2 |
| Si | β Datolite | CaB(SiO4)(OH) |
| Si | β Quartz | SiO2 |
| Si | β Stilbite Subgroup | M6-7[Al8-9Si27-28O72] · nH2O |
| Si | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| S | Sulfur | |
| S | β Pyrite | FeS2 |
| K | Potassium | |
| K | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Ca | Calcium | |
| Ca | β Aragonite | CaCO3 |
| Ca | β Calcite | CaCO3 |
| Ca | β Datolite | CaB(SiO4)(OH) |
| Ca | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Fe | Iron | |
| Fe | β Pyrite | FeS2 |
| Fe | β Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Ganderia DomainDomain
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References
