Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Our Science Mindat Newsletter [Free Download]Contact Us

Donate to Mindat Sponsor a Page Corporate Sponsorship Sponsored Pages

Learning Center What Is a Mineral?The Most Common Minerals on Earth Information for Educators Mindat Articles Mindat Newsletter [Free Download]The Elements The Mineral Quiz

Search Form Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Minerals by Country Alphabetical Mineral Index Alphabetical Locality Search Mineral Association Search List of Countries Localities Near Me Photo Search Search Articles Search Glossary The Rock H. Currier Digital Library More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Minerals Petrology Fossils Meteorites Geologic Time

Mining Companies Statistics Mineral Museums Clubs & Organizations Mineral Shows & Events Device Settings Time Machine

Read Discussions Identification Request

Photo Search Photo Galleries Search by Colour Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

The Needles, Custer State Park, Custer County, South Dakota, USA i
Regional Level Types
The Needles State Park
Custer State Park State Park
Custer County County
South Dakota State
USA Country

Regional Level Types
The Needles	State Park
Custer State Park	State Park
Custer County	County
South Dakota	State
USA	Country

This page is currently not sponsored. Click here to sponsor this page.

Photos Maps Search

Standard

All Photos (17)Specimen Photos (4)Locality Photos (13)Photos by Color Gallery Photo Statistics Add Photo

Map Pages Nearest Localities

Mineral Search Similar Localities Nearest Localities Predictive Mineralogy Search Google

The Needles.

The Needles, Custer State Park, Custer County, South Dakota, USA

Cathedral Spires north of the Needles Highway

The Needles, Custer State Park, Custer County, South Dakota, USA

Cathedral Spires north of the Needles Highway - wider view

The Needles, Custer State Park, Custer County, South Dakota, USA

The Needles.

The Needles, Custer State Park, Custer County, South Dakota, USA

Cathedral Spires north of the Needles Highway

The Needles, Custer State Park, Custer County, South Dakota, USA

Cathedral Spires north of the Needles Highway - wider view

The Needles, Custer State Park, Custer County, South Dakota, USA

The Needles.

The Needles, Custer State Park, Custer County, South Dakota, USA

Cathedral Spires north of the Needles Highway

The Needles, Custer State Park, Custer County, South Dakota, USA

Latitude & Longitude (WGS84):

43° 50' 28'' North , 103° 32' 43'' West

Latitude & Longitude (decimal):

G#: 9xy37v0d7

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Custer	1,952 (2017)	9.3km
Hill City	995 (2017)	10.4km
Keystone	343 (2017)	11.8km
Colonial Pine Hills	2,493 (2017)	26.1km
Pringle	109 (2017)	26.2km

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Club	Location	Distance
Western Dakota Gem & Mineral Society	Rapid City, South Dakota	37km

Mindat Locality ID:

48843

Long-form identifier:

mindat:1:2:48843:2

GUID (UUID V4):

The Needles are the eroded spires of the granite core of the black Hills. They are located east of Sylvan Lake on the Needles Highway No. 87. USGS topo maps place the text "The Needles" in the terrain just south of the Needle Eye by the tunnel on the Needles Highway. Coordinates are for the Eye. The complete length of the Needles Highway is contained in a northwest extension of Custer State Park and is listed as a scenic drive.

“The Cathedral Spires and Limber Pine Natural Area, a 637-acre portion of the Needles containing six ridges of pillars as well as a disjunct stand of limber pine, was designated a National Natural Landmark in 1976.” Reference, Wikipedia.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

ⓘ Marble

Mineral List

Mineral list contains entries from the region specified including sub-localities

29 valid minerals.

Detailed Mineral List:

ⓘ Actinolite

Formula: ◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Albite

Formula: Na(AlSi₃O₈)

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Albite var. Cleavelandite

Formula: Na(AlSi₃O₈)

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology

ⓘ 'Allanite Group'

Formula: (A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

References:

Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology

ⓘ Arsenolite

Formula: As₂O₃

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Arsenopyrite

Formula: FeAsS

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Autunite

Formula: Ca(UO₂)₂(PO₄)₂ · 10-12H₂O

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Calcite

Formula: CaCO₃

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Diopside

Formula: CaMgSi₂O₆

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

Localities:

November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA
Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

Fluorescence: Orange in SW

Description: Manganese rich

ⓘ Heterosite

Formula: (Fe³⁺,Mn³⁺)PO₄

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Hureaulite

Formula: Mn²⁺₅(PO₃OH)₂(PO₄)₂ · 4H₂O

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Leucophosphite

Formula: KFe³⁺₂(PO₄)₂(OH) · 2H₂O

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Melanterite

Formula: Fe²⁺(H₂O)₆SO₄ · H₂O

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Microcline

Formula: K(AlSi₃O₈)

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Opal

Formula: SiO₂ · nH₂O

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Pyrite

Formula: FeS₂

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Quartz

Formula: SiO₂

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Quartz var. Rose Quartz

Formula: SiO₂

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology

ⓘ Scheelite

Formula: Ca(WO₄)

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Scorodite

Formula: Fe³⁺AsO₄ · 2H₂O

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Spessartine

Formula: Mn²⁺₃Al₂(SiO₄)₃

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Tavorite

Formula: LiFe³⁺(PO₄)(OH)

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Titanite

Formula: CaTi(SiO₄)O

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Tremolite

Formula: ◻Ca₂Mg₅(Si₈O₂₂)(OH)₂

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology

ⓘ Uraninite

Formula: UO₂

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Wollastonite

Formula: Ca₃(Si₃O₉)

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Zircon

Formula: Zr(SiO₄)

Locality: November Mine, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

ⓘ Zoisite ?

Formula: (CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)

Locality: Old Marble quarry, The Needles, Custer State Park, Custer County, South Dakota, USA

References:

Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
Group 4 - Oxides and Hydroxides
ⓘ	Arsenolite	4.CB.50	As₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	var. Rose Quartz	4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Uraninite	4.DL.05	UO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Melanterite	7.CB.35	Fe²⁺(H₂O)₆SO₄ · H₂O
ⓘ	Scheelite	7.GA.05	Ca(WO₄)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Heterosite	8.AB.10	(Fe³⁺,Mn³⁺)PO₄
ⓘ	Tavorite	8.BB.05	LiFe³⁺(PO₄)(OH)
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
ⓘ	Hureaulite	8.CB.10	Mn²⁺₅(PO₃OH)₂(PO₄)₂ · 4H₂O
ⓘ	Scorodite	8.CD.10	Fe³⁺AsO₄ · 2H₂O
ⓘ	Leucophosphite	8.DH.10	KFe³⁺₂(PO₄)₂(OH) · 2H₂O
ⓘ	Autunite	8.EB.05	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
Group 9 - Silicates
ⓘ	Spessartine	9.AD.25	Mn²⁺₃Al₂(SiO₄)₃
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Zoisite ?	9.BG.10	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
ⓘ	Tremolite	9.DE.10	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
ⓘ	Wollastonite	9.DG.05	Ca₃(Si₃O₉)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Cleavelandite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄
ⓘ	'Allanite Group'	-	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
H	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
H	ⓘ Hureaulite	Mn₅²⁺(PO₃OH)₂(PO₄)₂ · 4H₂O
H	ⓘ Leucophosphite	KFe₂³⁺(PO₄)₂(OH) · 2H₂O
H	ⓘ Melanterite	Fe²⁺(H₂O)₆SO₄ · H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ Scorodite	Fe³⁺AsO₄ · 2H₂O
H	ⓘ Tavorite	LiFe³⁺(PO₄)(OH)
H	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
H	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
H	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
H	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
Li	Lithium
Li	ⓘ Tavorite	LiFe³⁺(PO₄)(OH)
C	Carbon
C	ⓘ Calcite	CaCO₃
C	ⓘ Dolomite	CaMg(CO₃)₂
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Arsenolite	As₂O₃
O	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
O	ⓘ Calcite	CaCO₃
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Heterosite	(Fe³⁺,Mn³⁺)PO₄
O	ⓘ Hureaulite	Mn₅²⁺(PO₃OH)₂(PO₄)₂ · 4H₂O
O	ⓘ Leucophosphite	KFe₂³⁺(PO₄)₂(OH) · 2H₂O
O	ⓘ Melanterite	Fe²⁺(H₂O)₆SO₄ · H₂O
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Quartz var. Rose Quartz	SiO₂
O	ⓘ Scheelite	Ca(WO₄)
O	ⓘ Scorodite	Fe³⁺AsO₄ · 2H₂O
O	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
O	ⓘ Tavorite	LiFe³⁺(PO₄)(OH)
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
O	ⓘ Uraninite	UO₂
O	ⓘ Wollastonite	Ca₃(Si₃O₉)
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
O	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
F	Fluorine
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Mg	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Al	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Quartz var. Rose Quartz	SiO₂
Si	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
Si	ⓘ Wollastonite	Ca₃(Si₃O₉)
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Albite var. Cleavelandite	Na(AlSi₃O₈)
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Si	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
P	Phosphorus
P	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Heterosite	(Fe³⁺,Mn³⁺)PO₄
P	ⓘ Hureaulite	Mn₅²⁺(PO₃OH)₂(PO₄)₂ · 4H₂O
P	ⓘ Leucophosphite	KFe₂³⁺(PO₄)₂(OH) · 2H₂O
P	ⓘ Tavorite	LiFe³⁺(PO₄)(OH)
S	Sulfur
S	ⓘ Arsenopyrite	FeAsS
S	ⓘ Melanterite	Fe²⁺(H₂O)₆SO₄ · H₂O
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ Leucophosphite	KFe₂³⁺(PO₄)₂(OH) · 2H₂O
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Ca	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Scheelite	Ca(WO₄)
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Tremolite	◻Ca₂Mg₅(Si₈O₂₂)(OH)₂
Ca	ⓘ Wollastonite	Ca₃(Si₃O₉)
Ca	ⓘ Zoisite	(CaCa)(AlAlAl)O[Si₂O₇][SiO₄](OH)
Ti	Titanium
Ti	ⓘ Titanite	CaTi(SiO₄)O
Mn	Manganese
Mn	ⓘ Heterosite	(Fe³⁺,Mn³⁺)PO₄
Mn	ⓘ Hureaulite	Mn₅²⁺(PO₃OH)₂(PO₄)₂ · 4H₂O
Mn	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	ⓘ Arsenopyrite	FeAsS
Fe	ⓘ Heterosite	(Fe³⁺,Mn³⁺)PO₄
Fe	ⓘ Leucophosphite	KFe₂³⁺(PO₄)₂(OH) · 2H₂O
Fe	ⓘ Melanterite	Fe²⁺(H₂O)₆SO₄ · H₂O
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Scorodite	Fe³⁺AsO₄ · 2H₂O
Fe	ⓘ Tavorite	LiFe³⁺(PO₄)(OH)
As	Arsenic
As	ⓘ Arsenolite	As₂O₃
As	ⓘ Arsenopyrite	FeAsS
As	ⓘ Scorodite	Fe³⁺AsO₄ · 2H₂O
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
W	Tungsten
W	ⓘ Scheelite	Ca(WO₄)
U	Uranium
U	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
U	ⓘ Uraninite	UO₂

Localities in this Region

USA

South Dakota
- Custer County
  - Custer State Park
    - The Needles
      - November Mine
      - Old Marble quarry

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Wyoming CratonCraton
Wyoming DomainDomain

USA

Black HillsMountain Range
South Dakota
- Custer County
  - Custer State ParkState Park

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.

Quick NavTop Commodities Mineral List Localities in Region Other Regions

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 22, 2026 03:34:28 Page updated: August 4, 2025 19:05:49

Go to top of page

The Needles, Custer State Park, Custer County, South Dakota, USAiRegional Level TypesThe NeedlesState Park Custer State ParkState Park Custer CountyCounty South DakotaState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Commodity List

Mineral List

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Localities in this Region

Other Regions, Features and Areas containing this locality

The Needles, Custer State Park, Custer County, South Dakota, USA i
Regional Level Types
The Needles State Park
Custer State Park State Park
Custer County County
South Dakota State
USA Country