Willimantic, Windham, Windham County, Connecticut, USAi
| Regional Level Types | |
|---|---|
| Willimantic | Borough |
| Windham | Town |
| Windham County | County |
| Connecticut | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
41° 42' 47'' North , 72° 13' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Willimantic is a borough (formerly a city) with an incorporated boundary completely within the town of Windham's boundary.
Specimens of coarse-grained, brown, prismatic sillimanite in granular quartz are noted from somewhere in Willimantic - no reference or collection seems to have recorded the specific location. Other similar specimens are found at the type locality in Chester, Conn. and at the Falls of the Yantic in Norwich, Conn. Both of these localities are hosted by the Tatnic Hill Formation, which crops out around, but not within Willimantic.
The U. S. Route 6 Willimantic Bypass highway is not in Willimantic, but passes mostly through Coventry, where most of the rock cuts (in the Tatnic Hill Formation) are located, and within the town of Windham. Specimens from the bypass should be posted on this mindat page:
http://www.mindat.org/loc-212277.html
The sillimanite specimens apparently predate the Route 6 construction.
Specimens of coarse-grained, brown, prismatic sillimanite in granular quartz are noted from somewhere in Willimantic - no reference or collection seems to have recorded the specific location. Other similar specimens are found at the type locality in Chester, Conn. and at the Falls of the Yantic in Norwich, Conn. Both of these localities are hosted by the Tatnic Hill Formation, which crops out around, but not within Willimantic.
The U. S. Route 6 Willimantic Bypass highway is not in Willimantic, but passes mostly through Coventry, where most of the rock cuts (in the Tatnic Hill Formation) are located, and within the town of Windham. Specimens from the bypass should be posted on this mindat page:
http://www.mindat.org/loc-212277.html
The sillimanite specimens apparently predate the Route 6 construction.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities10 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Beryl Formula: Be3Al2(Si6O18) |
| ⓘ Bismutite Formula: (BiO)2CO3 Localities: Habit: bent columnar structure Colour: dark gray Description: 1/4-pound pseudomorph after bismuthinite, analyzed by Wells in 1887. |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 References: |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Habit: massive Colour: black Description: Massive material in granular quartz with coarse-grained, clove-brown sillimanite crystals from an unspecified location. |
| ⓘ Microcline Formula: K(AlSi3O8) |
| ⓘ Prehnite Formula: Ca2Al2Si3O10(OH)2 References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Smoky Quartz Formula: SiO2 Localities: Description: Described as occurring in "fine crystals". Perhaps it is the source of this unattributed specimen: http://www.mindat.org/photo-472700.html |
| ✪ 'Scapolite' Habit: elongated prismatic with square cross-section Colour: white Fluorescence: pink under SW, white under MW and LW UV Description: Bar-shaped crystals to about 3 cm in quartz. From an unrecorded locality, formerly in the John Legro collection from the 1920s. References: |
| ✪ Sillimanite Formula: Al2(SiO4)O Habit: elongated prisms Colour: clove brown Description: Vitreous, translucent, somewhat chatoyant, clove brown crystals to 4 cm in granular quartz with magnetite are from an unspecified location. References: |
| ⓘ Topaz Formula: Al2(SiO4)(F,OH)2 Habit: elongated prismatic Colour: colorless Description: Partial, at least 3 cm prismatic crystal in pegmatitic albite/quartz matrix in the Yale Peabody Museum collection MIN.044604. https://collections.peabody.yale.edu/search/Record/YPM-MIN-044604 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Smoky Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Bismutite | 5.BE.25 | (BiO)2CO3 |
| Group 9 - Silicates | |||
| ⓘ | Sillimanite | 9.AF.05 | Al2(SiO4)O |
| ⓘ | Topaz | 9.AF.35 | Al2(SiO4)(F,OH)2 |
| ⓘ | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | Prehnite | 9.DP.20 | Ca2Al2Si3O10(OH)2 |
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Scapolite' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| H | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Be | Beryllium | |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| C | Carbon | |
| C | ⓘ Bismutite | (BiO)2CO3 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Bismutite | (BiO)2CO3 |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Sillimanite | Al2(SiO4)O |
| O | ⓘ Quartz var. Smoky Quartz | SiO2 |
| O | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| F | Fluorine | |
| F | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Mg | Magnesium | |
| Mg | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Al | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Al | ⓘ Sillimanite | Al2(SiO4)O |
| Al | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Sillimanite | Al2(SiO4)O |
| Si | ⓘ Quartz var. Smoky Quartz | SiO2 |
| Si | ⓘ Topaz | Al2(SiO4)(F,OH)2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| K | Potassium | |
| K | ⓘ Microcline | K(AlSi3O8) |
| Ca | Calcium | |
| Ca | ⓘ Prehnite | Ca2Al2Si3O10(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Bi | Bismuth | |
| Bi | ⓘ Bismutite | (BiO)2CO3 |
Other Databases
| Wikipedia: | https://en.wikipedia.org/wiki/Willimantic,_Connecticut |
|---|---|
| Wikidata ID: | Q754078 |
| GeoNames ID: | 4845823 |
Localities in this Region
- Connecticut
- Windham County
- Windham
- Willimantic
- Windham
- Windham County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Ganderia DomainDomain
- GranderiaPassive Margin
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
Willimantic, Windham, Windham County, Connecticut, USA