Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Bald Knob Deposit (Primary Ore Body; Crouse Knob Deposit), Bald Knob, Sparta, Alleghany Co., North Carolina, USA

mindat Locality ID: 4036
mindat URL: http://www.mindat.org/loc-4036.html

Tectonic Settings:

Total number of sublocalities beneath "Bald Knob Deposit (Primary Ore Body; Crouse Knob Deposit), Bald Knob, Sparta, Alleghany Co., North Carolina, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 36°32'59"N
Longitude: 81°5'44"W
Decimal Degree (lat, lon): 36.549722222222,-81.095555555556

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Allophane	Amphibole	Apatite	Calcite	Chalcopyrite	Chlorite	Clay	Cobaltite	Corundum	Feldspar
Garnet	Humite	Mica	Nickeline	None	Olivine	Pyrite	Quartz	Rhodonite	Rocksalt
Rutile	Serpentine	Spinel	Stilpnomelane

Actinolite ()*	Alabandite ()*	Albite ()*	Alleghanyite ()*	Andradite ()*
Anthophyllite ()*	Bementite ()*	Calcite ()*	Caryopilite ()*	Cattierite ()*
Chalcopyrite ()*	Clino-suenoite ()*	Cobaltite ()*	Cummingtonite ()*	Fluorapatite ()*
Galaxite ()*	Grunerite ()*	Jacobsite ()*	Kellyite ()*	Kutnohorite ()*
Linnaeite ()*	Magnetite ()*	Manganhumite ()*	Margarite ()*	Muscovite ()*
Neotocite ()*	Pennantite ()*	Phlogopite ()*	Pyrite ()*	Pyrolusite ()*
Pyrophanite ()*	Pyroxmangite ()*	Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*
Rhodonite ()*	Sonolite ()*	Spessartine ()*	Stilpnomelane ()*	Tephroite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al As C Ca Co Cu F Fe H K Mg Mn Na O P S Si Ti

Elements from minerals reported directly at this locality: Al As C Ca Co Cu F Fe H K Mg Mn Na O P S Si Ti

Structural Groups for minerals in this locality:
Allophane Amphibole Apatite Calcite Chalcopyrite Chlorite Clay Cobaltite Corundum Feldspar
Garnet Humite Mica Nickeline None Olivine Pyrite Quartz Rhodonite Rocksalt
Rutile Serpentine Spinel Stilpnomelane

40 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	3419
Alabandite ()*	Rocksalt	MnS	312
Albite ()*	Feldspar	Na(AlSi₃O₈)	8803
Alleghanyite ()*	Humite	Mn²⁺₅(SiO₄)₂(OH)₂	77
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	1534
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	718
Bementite ()*	Clay	Mn₇Si₆O₁₅(OH)₈	173
Calcite ()*	Calcite	Ca(CO₃)	27770
Caryopilite ()*	Clay Serpentine	Mn²⁺₃Si₂O₅(OH)₄	83
Cattierite ()*	Pyrite	CoS₂	30
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	27198
Clino-suenoite ()*	Amphibole	Mn²⁺₂Mg₅Si₈O₂₂(OH)₂	57
Cobaltite ()*	Cobaltite	CoAsS	966
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	327
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	2740
Galaxite ()*	Spinel	Mn²⁺Al₂O₄	43
Grunerite ()*	Amphibole	Fe²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂	223
Jacobsite ()*	Spinel	Mn²⁺Fe³⁺₂O₄	172
Kellyite ()*	Clay Serpentine	(Mn²⁺,Mg,Al)₃(Si,Al)₂O₅(OH)₄	11
Kutnohorite ()*	None	CaMn²⁺(CO₃)₂	234
Linnaeite ()*	Spinel	Co²⁺Co³⁺₂S₄	249
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	14899
Manganhumite ()*	Humite	Mn²⁺₇(SiO₄)₃(OH)₂	14
Margarite ()*	Mica Clay	CaAl₂Si₂Al₂O₁₀(OH)₂	168
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	17380
Neotocite ()*	Allophane	(Mn,Fe)SiO₃·H₂O (?)	186
Pennantite ()*	Chlorite Clay	Mn²⁺₅Al(Si₃Al)O₁₀(OH)₈	25
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	2273
Pyrite ()*	Pyrite	FeS₂	39462
Pyrolusite ()*	Rutile	MnO₂	3106
Pyrophanite ()*	Corundum	Mn²⁺TiO₃	244
Pyroxmangite ()*	None	Mn²⁺SiO₃	147
Pyrrhotite ()*	Nickeline	Fe₇S₈	9056
Quartz ()*	Quartz	SiO₂	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	969
Sonolite ()*	Humite	Mn²⁺₉(SiO₄)₄(OH)₂	50
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃	1214
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	456
Tephroite ()*	Olivine	Mn²⁺₂(SiO₄)	240

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
FKM-243	Bald Knob Deposit (Primary Ore Body; Crouse Knob Deposit), Bald Knob, Sparta, Alleghany Co., North Carolina, USA	https://www.rockptx.com/fkm-226-to-fkm-250/#FKM-243

All locality data graciously provided by mindat.org

All age data...