State Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| State Route 9 rock cuts | - not defined - |
| Haddam | - not defined - |
| Middlesex County | County |
| Connecticut | State |
| USA | Country |
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Latitude & Longitude (WGS84):
41° 26' 45'' North , 72° 31' 14'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| East Haddam | 9,042 (2017) | 5.0km |
| Higganum | 1,698 (2017) | 6.4km |
| Chester Center | 1,558 (2017) | 7.5km |
| Moodus | 1,413 (2017) | 8.6km |
| Deep River Center | 2,484 (2017) | 9.9km |
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 | 26km |
| New Haven Mineral Club | New Haven, Connecticut | 37km |
| Bristol Gem & Mineral Club | Bristol, Connecticut | 44km |
This locality page is for the long rock cuts SSE of the Beaver Meadow Road interchange area, which has its own locality page, as do the cuts at the state Route 81 interchange.
These cuts, made in the late 1960s, extend for about 1 km, between Filley Road and Cedar Lake Road, and expose various metamorphic rocks (schist, gneiss, amphibolite, marble) of the Ordovician Collins Hill Formation and pegmatites. The geology of the cuts is mapped in detail in Lundgren (1979) (Figure 6). Most of the mineral finds are detailed in Schooner (circa 1990).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) Habit: anhedral Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Axinite-(Fe) Formula: Ca2Fe2+Al2BSi4O15OH Colour: lavender Description: With tan titanite and pink feldspar. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 Habit: crust Colour: light blue Description: A few scanty crusts of light blue azurite, with malachite and chalcopyrite, on amphibolite (Schooner, circa 1985). Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 Habit: anhedral Colour: black Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Calcite Formula: CaCO3 Habit: anhedral Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Chalcopyrite Formula: CuFeS2 Description: Little masses, surrounded by malachite, were found in gedrite gneiss (Schooner, circa 1985). Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Cronstedtite Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4 Habit: radial groups of flattened crystals Colour: greenish-brown to almost black Description: A drab greenish-brown to almost black mineral, abundantly associated with grunerite, siderite, and marcasite, was identified as chamosite. Careful restudy of X-ray data indicates cronstedtite as a better fit. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Diopside Formula: CaMgSi2O6 Habit: anhedral Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Epidote Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Grunerite Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 Description: siderite layers up to 1/2 inch were common in a vein of marcasite, cronstedtite, grunerite, and quartz (Schooner, circa 1985). Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ 'Hornblende' Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Habit: crust Description: A few scanty crusts of light blue azurite, with malachite and chalcopyrite, on amphibolite (Schooner, circa 1985). Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Marcasite Formula: FeS2 Description: in a quartz vein, several feet thick, with considerable marcasite, siderite, and cronstedtite (Schooner, circa 1985). Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Melanterite Formula: Fe2+(H2O)6SO4 · H2O Description: Alteration of the marcasite-siderite vein. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Habit: anhedral Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Paragonite Formula: NaAl2(AlSi3O10)(OH)2 Habit: anhedral Colour: white to gray Description: Sillimanite, collected in a quartz vein through schist, is altered, in a few samples, to a very soft, greasy-feeling, white or gray material. X-ray study indicates a mixture of fine-grained paragonite and subsidiary pyrophyllite. A fingernail easily scratches it. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Phlogopite Formula: KMg3(AlSi3O10)(OH)2 Habit: anhedral flakes Colour: brown Description: In the calcite marble. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Pyrite Formula: FeS2 Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Pyrophyllite Formula: Al2Si4O10(OH)2 Description: Sillimanite, collected in a quartz vein through schist, is altered, in a few samples, to a very soft, greasy-feeling, white or gray material. X-ray study indicates a mixture of fine-grained paragonite and subsidiary pyrophyllite. A fingernail easily scratches it. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Quartz Formula: SiO2 Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Siderite Formula: FeCO3 Habit: drusy Colour: brown Description: siderite layers up to 1/2 inch were common in a vein of marcasite, cronstedtite, grunerite, and quartz. Nice little curved brown drusy crystals are present on a few specimens. Reference: Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy. |
| ⓘ Sillimanite Formula: Al2(SiO4)O Habit: parallel-fibrous Description: Excellent specimens of parallel-fibrous sillimanite, some altered to fine-grained mica and pyrophyllite, were collected in quartz veins (Schooner, circa 1985). Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
| ⓘ Titanite Formula: CaTi(SiO4)O Colour: tan Description: tan crystals with lavender ferroaxinite and pink feldspar (Schooner, circa 1985) Reference: Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Melanterite | 7.CB.35 | Fe2+(H2O)6SO4 · H2O |
| Group 9 - Silicates | |||
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | Axinite-(Fe) | 9.BD.20 | Ca2Fe2+Al2BSi4O15OH |
| ⓘ | Cronstedtite | 9.ED.15 | Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Epidote | 9.BG.05a | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| ⓘ | Grunerite | 9.DE.05 | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Paragonite | 9.EC.15 | NaAl2(AlSi3O10)(OH)2 |
| ⓘ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| ⓘ | Pyrophyllite | 9.EC.10 | Al2Si4O10(OH)2 |
| ⓘ | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| ⓘ | Sillimanite | 9.AF.05 | Al2(SiO4)O |
| ⓘ | Titanite | 9.AG.15 | CaTi(SiO4)O |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Hornblende' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| H | ⓘ Cronstedtite | Fe22+Fe3+((Si,Fe3+)2O5)(OH)4 |
| H | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| H | ⓘ Paragonite | NaAl2(AlSi3O10)(OH)2 |
| H | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| H | ⓘ Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| H | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| B | Boron | |
| B | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| C | Carbon | |
| C | ⓘ Siderite | FeCO3 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Sillimanite | Al2(SiO4)O |
| O | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | ⓘ Titanite | CaTi(SiO4)O |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| O | ⓘ Cronstedtite | Fe22+Fe3+((Si,Fe3+)2O5)(OH)4 |
| O | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| O | ⓘ Paragonite | NaAl2(AlSi3O10)(OH)2 |
| O | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| O | ⓘ Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Na | Sodium | |
| Na | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | ⓘ Paragonite | NaAl2(AlSi3O10)(OH)2 |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Sillimanite | Al2(SiO4)O |
| Al | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Al | ⓘ Paragonite | NaAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Al | ⓘ Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Sillimanite | Al2(SiO4)O |
| Si | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | ⓘ Titanite | CaTi(SiO4)O |
| Si | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Si | ⓘ Cronstedtite | Fe22+Fe3+((Si,Fe3+)2O5)(OH)4 |
| Si | ⓘ Paragonite | NaAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Si | ⓘ Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Titanite | CaTi(SiO4)O |
| Ca | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Ca | ⓘ Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ti | Titanium | |
| Ti | ⓘ Titanite | CaTi(SiO4)O |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Fe | ⓘ Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Cronstedtite | Fe22+Fe3+((Si,Fe3+)2O5)(OH)4 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Melanterite | Fe2+(H2O)6SO4 · H2O |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Fe | ⓘ Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) |
| Fe | ⓘ Grunerite | ◻{Fe22+}{Fe52+}(Si8O22)(OH)2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Lundgren, Lawrence, Jr. (1979), The Bedrock Geology of the Haddam Quadrangle. State Geological and Natural History Survey of Connecticut. Quadrangle Report No. 37.
Schooner, Richard. (circa 1990), Untitled manuscript on central Connecticut mineralogy.
Other Regions, Features and Areas containing this locality
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State Route 9 rock cuts, Haddam, Middlesex County, Connecticut, USA