Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USAi
Regional Level Types
Detroit City MineMine
Mount BrossMountain
Alma Mining DistrictMining District
Park Co.County
ColoradoState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Location of the new Detroit City Mine compared to the Sweet Home mine. Summit of Mount Bross (A Colorado “fourteener”) is shown as well. Tom Praszkier graphic.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Detroit City Mine Portal with equipment in September 2017.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Initial Excavation of Detroit City Mine Portal Site.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Location of the new Detroit City Mine compared to the Sweet Home mine. Summit of Mount Bross (A Colorado “fourteener”) is shown as well. Tom Praszkier graphic.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Detroit City Mine Portal with equipment in September 2017.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Initial Excavation of Detroit City Mine Portal Site.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Location of the new Detroit City Mine compared to the Sweet Home mine. Summit of Mount Bross (A Colorado “fourteener”) is shown as well. Tom Praszkier graphic.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Detroit City Mine Portal with equipment in September 2017.

Detroit City Mine, Mount Bross, Alma Mining District, Park Co., Colorado, USA
Latitude & Longitude (WGS84):
39° 18' 46'' North , 106° 7' 0'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Alma277 (2017)5.7km
Fairplay681 (2017)13.9km
Blue River904 (2017)14.4km
Leadville2,644 (2017)16.6km
Leadville North1,794 (2011)17.0km


The Detroit City mine was started in 2016 and is a new mine approximately 60 meters vertically above the former Sweet Home mine adit (now permanently closed/sealed off). The mining target is the upward extension of the mineralized Sweet Home vein system, and the goal is to mine specimen-quality rhodochrosite and associated minerals. The Detroit City mine is operated by Collector's Edge Minerals Incorporated and is an active mining operation. Please see the frequently asked questions below for additional information.

Question: Is this going to be a re-opening of the Sweet Home mine?

Answer: No. The Detroit City mine is a completely different mine, put in ‘from scratch’, and will not intersect or connect to any of the former Sweet Home mine workings. There are multiple reasons for this decision not to pursue mining rhodochrosite via the old Sweet Home workings.

Question: Are visitors welcome at the Detroit City mine?

Answer: The mine is strictly off-limits to unauthorized visitors. At the present time, the mine is simply a tunnel into a mountain through unmineralized rock, so there really isn’t too much to see anyways. We will be posting frequent updates on the progress of the mine online (collectorsedge.com, Facebook, Instagram, and email updates), so stay tuned.

Question: Will Rhodochrosite and other minerals from the Detroit City mine look the same as those from the Sweet Home mine?

Answer: While every pocket encountered at the Sweet Home mine was different and unique, we have strong reason to believe that the quality, color and size of rhodochrosite crystals found in the Detroit City mine will be similar to those found at the Sweet Home. That said, there is always the possibility that new types of crystallized rhodochrosite or other minerals will be found, and we are excited for that possibility. We would refer the reader to the special July-August 1998 issue of the Mineralogical Record magazine on the Sweet Home Mine to learn more about the mineralogy of this unique deposit.

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


21 valid minerals.

Detailed Mineral List:

'Albite-Anorthite Series'
Reference: Collector's Edge Minerals Inc
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Collector's Edge Minerals Inc
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Collector's Edge Minerals Inc
Bornite
Formula: Cu5FeS4
Reference: Collector's Edge Minerals Inc
Calcite
Formula: CaCO3
Reference: Collector's Edge Minerals Inc
Chalcopyrite
Formula: CuFeS2
Reference: Collector's Edge Minerals Inc
'Chlorite Group'
Reference: Collector's Edge Minerals Inc
Dickite
Formula: Al2(Si2O5)(OH)4
Reference: Collector's Edge Minerals Inc
Dolomite
Formula: CaMg(CO3)2
Reference: Collector's Edge Minerals Inc
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Collector's Edge Minerals Inc
Fluorite
Formula: CaF2
Reference: Collector's Edge Minerals Inc
Galena
Formula: PbS
Reference: Collector's Edge Minerals Inc
Goyazite
Formula: SrAl3(PO4)(PO3OH)(OH)6
Reference: Collector's Edge Minerals Inc
Hematite
Formula: Fe2O3
Reference: Collector's Edge Minerals Inc
Hübnerite
Formula: MnWO4
Reference: Collector's Edge Minerals Inc
'K Feldspar'
Reference: Collector's Edge Minerals Inc
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Collector's Edge Minerals Inc
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Collector's Edge Minerals Inc
Pyrite
Formula: FeS2
Reference: Collector's Edge Minerals Inc
Quartz
Formula: SiO2
Reference: Collector's Edge Minerals Inc
Rhodochrosite
Formula: MnCO3
Reference: Collector's Edge Minerals Inc
Sphalerite
Formula: ZnS
Reference: Collector's Edge Minerals Inc
Svanbergite
Formula: SrAl3(PO4)(SO4)(OH)6
Reference: Collector's Edge Minerals Inc
Tennantite
Formula: Cu6Cu4(Fe2+,Zn)2As4S12S
Reference: Collector's Edge Minerals Inc
Tetrahedrite
Formula: Cu6Cu4(Fe2+,Zn)2Sb4S12S
Reference: Collector's Edge Minerals Inc

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tennantite2.GB.05Cu6Cu4(Fe2+,Zn)2As4S12S
Tetrahedrite2.GB.05Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Hübnerite4.DB.30MnWO4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Rhodochrosite5.AB.05MnCO3
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Goyazite8.BL.10SrAl3(PO4)(PO3OH)(OH)6
Svanbergite8.BL.05SrAl3(PO4)(SO4)(OH)6
Group 9 - Silicates
Dickite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-
'K Feldspar'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tennantite3.3.6.2Cu6Cu4(Fe2+,Zn)2As4S12S
Tetrahedrite3.3.6.1Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Rhodochrosite14.1.1.4MnCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq·xH2O
Goyazite42.7.3.3SrAl3(PO4)(PO3OH)(OH)6
Group 43 - COMPOUND PHOSPHATES, ETC.
Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Svanbergite43.4.1.6SrAl3(PO4)(SO4)(OH)6
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Hübnerite48.1.1.1MnWO4
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Dickite71.1.1.1Al2(Si2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Chlorite Group'-
'K Feldspar'-

List of minerals for each chemical element

HHydrogen
H ApatiteCa5(PO4)3(Cl/F/OH)
H DickiteAl2(Si2O5)(OH)4
H GoyaziteSrAl3(PO4)(PO3OH)(OH)6
H MalachiteCu2(CO3)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H SvanbergiteSrAl3(PO4)(SO4)(OH)6
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C MalachiteCu2(CO3)(OH)2
C RhodochrositeMnCO3
OOxygen
O AnkeriteCa(Fe2+,Mg)(CO3)2
O ApatiteCa5(PO4)3(Cl/F/OH)
O CalciteCaCO3
O DickiteAl2(Si2O5)(OH)4
O DolomiteCaMg(CO3)2
O FluorapatiteCa5(PO4)3F
O GoyaziteSrAl3(PO4)(PO3OH)(OH)6
O HematiteFe2O3
O HübneriteMnWO4
O MalachiteCu2(CO3)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O RhodochrositeMnCO3
O SvanbergiteSrAl3(PO4)(SO4)(OH)6
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluorapatiteCa5(PO4)3F
F FluoriteCaF2
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg DolomiteCaMg(CO3)2
AlAluminium
Al DickiteAl2(Si2O5)(OH)4
Al GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SvanbergiteSrAl3(PO4)(SO4)(OH)6
SiSilicon
Si DickiteAl2(Si2O5)(OH)4
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P FluorapatiteCa5(PO4)3F
P GoyaziteSrAl3(PO4)(PO3OH)(OH)6
P SvanbergiteSrAl3(PO4)(SO4)(OH)6
SSulfur
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
S SvanbergiteSrAl3(PO4)(SO4)(OH)6
S TennantiteCu6Cu4(Fe2+,Zn)2As4S12S
S TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca FluorapatiteCa5(PO4)3F
Ca FluoriteCaF2
MnManganese
Mn HübneriteMnWO4
Mn RhodochrositeMnCO3
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe HematiteFe2O3
Fe PyriteFeS2
Fe TennantiteCu6Cu4(Fe2+,Zn)2As4S12S
Fe TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu TennantiteCu6Cu4(Fe2+,Zn)2As4S12S
Cu TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
ZnZinc
Zn SphaleriteZnS
Zn TennantiteCu6Cu4(Fe2+,Zn)2As4S12S
Zn TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
AsArsenic
As TennantiteCu6Cu4(Fe2+,Zn)2As4S12S
SrStrontium
Sr GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Sr SvanbergiteSrAl3(PO4)(SO4)(OH)6
SbAntimony
Sb TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
WTungsten
W HübneriteMnWO4
PbLead
Pb GalenaPbS

External Links



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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 21, 2019 11:49:06 Page generated: July 21, 2019 09:39:16
Go to top of page