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Oil Mill Pond, Danbury, Fairfield County, Connecticut, USAi
Regional Level Types
Oil Mill PondConstruction Site
DanburyCity
Fairfield CountyCounty
ConnecticutState
USACountry

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Latitude & Longitude (WGS84):
41° 23' 18'' North , 73° 27' 54'' West
Latitude & Longitude (decimal):
41.38838,-73.46518
GRN:
N28W40
Type:
Construction Site
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Danbury84,657 (2017)1.2km
Bethel9,549 (2017)4.7km
New Fairfield14,126 (2017)8.8km
Peach Lake1,629 (2017)9.7km
Putnam Lake3,844 (2017)10.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Danbury Mineralogical SocietyDanbury, Connecticut1km
Stamford Mineralogical SocietyStamford, Connecticut38km
New Haven Mineral ClubNew Haven, Connecticut46km
Mindat Locality ID:
299132
Long-form identifier:
mindat:1:2:299132:3
GUID (UUID V4):
0


According to Huff (2013) danburite was discovered by Ronald Januzzi during a sewer project at an old factory at Oil Mill Pond (now drained and built over) off Lake Avenue. It reportedly was identified by various methods, although none of the results are included in the reference. The new discovery is in a rock containing danburite, titanite, phologopite, olivine and feldspar. This sounds similar to type locality rock in museum holdings (see https://www.mindat.org/loc-243666.html), but which has not been located in the field. It is presumably from a marble but geologic mapping at this new locality is all Proterozoic gneiss. Huff (2013) provides little detail about the locality, even less than the meager description of the type locality. When was it found? Was it in place? Was it in a boulder? What is the rock type? Where are the samples? How about posting some photos of the locality and the samples to mindat.org and fleshing out this page some more?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

ⓘ Danburite
Formula: CaB2Si2O8
Habit: prismatic
Colour: colorless
Description: Described by Huff (2013) as "small, colorless, prismatic crystals, associated with titanite, phlogopite, olivine and feldspar. The daburite was examined via an optical emission spectograph and an atomic absorption spectrophotometer. Further studies, including polarized light microscopy, specific gravity measurement and observations made while fusing the mineral, were all consistent with danburite."
ⓘ 'Fayalite-Forsterite Series'
ⓘ 'Feldspar Group'
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Titanite
Formula: CaTi(SiO4)O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘDanburite9.FA.65CaB2Si2O8
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Fayalite-Forsterite Series'-

List of minerals for each chemical element

HHydrogen
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
BBoron
Bⓘ DanburiteCaB2Si2O8
OOxygen
Oⓘ DanburiteCaB2Si2O8
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Fayalite-Forsterite Series
MgMagnesium
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Siⓘ DanburiteCaB2Si2O8
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ Fayalite-Forsterite Series
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ DanburiteCaB2Si2O8
Caⓘ TitaniteCaTi(SiO4)O
TiTitanium
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ Fayalite-Forsterite Series

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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

Huff, Russell. (2013), Rediscovery of Danburite at Danbury, Connecticut. Mineral News: 29(8): 6.
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