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:
Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia

Oldest recorded age at locality: 704
Youngest recorded age at locality: 654

mindat Locality ID: 31173
mindat URL: http://www.mindat.org/loc-31173.html

Tectonic Settings:

Total number of sublocalities beneath "Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia": 0
Total number of bottom-level sublocalities: 0

Latitude: 10°10'"S
Longitude: 32°52'0"E
Decimal Degree (lat, lon): -10.166666666667,32.866666666667

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.

Apatite	Aragonite	Baryte	Bastnäsite	Calcite	Clay	Corundum	Fluorite	Mica	Monazite
None	Pyrite	Quartz	Rutile	Titanite

Ankerite ()*	Baryte ()*	Bastnäsite-(Ce) ()*	Calcite ()*	Daqingshanite-(Ce) ()*
Dolomite ()*	Fluorite ()*	Fluorstrophite ()*	Ilmenite ()*	Isokite ()*
Magnesite ()*	Monazite-(Ce) ()*	Phlogopite ()*	Pyrite ()*	Quartz ()*
Sellaite ()*	Siderite ()*	Strontianite ()*

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 Ba C Ca Ce F Fe H K Mg O P S Si Sr Ti

Elements from minerals reported directly at this locality: Al Ba C Ca Ce F Fe H K Mg O P S Si Sr Ti

Structural Groups for minerals in this locality:
Apatite Aragonite Baryte Bastnäsite Calcite Clay Corundum Fluorite Mica Monazite
None Pyrite Quartz Rutile Titanite

18 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	704	654	3092
Baryte ()*	Baryte	Ba(SO₄)	704	654	11547
Bastnäsite-(Ce) ()*	Bastnäsite	Ce(CO₃)F	704	654	304
Calcite ()*	Calcite	Ca(CO₃)	704	654	27770
Daqingshanite-(Ce) ()*	None	Sr₃Ce(PO₄)(CO₃)₃	704	654	9
Dolomite ()*	None	CaMg(CO₃)₂	704	654	9895
Fluorite ()*	Fluorite	CaF₂	704	654	9617
Fluorstrophite ()*	Apatite	SrCaSr₃(PO₄)₃F	704	654	9
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	704	654	5433
Isokite ()*	Titanite	CaMg(PO₄)F	704	654	22
Magnesite ()*	Calcite	Mg(CO₃)	704	654	1487
Monazite-(Ce) ()*	Monazite	Ce(PO₄)	704	654	945
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	704	654	2273
Pyrite ()*	Pyrite	FeS₂	704	654	39462
Quartz ()*	Quartz	SiO₂	704	654	61156
Sellaite ()*	Rutile	MgF₂	704	654	46
Siderite ()*	Calcite	Fe(CO₃)	704	654	6417
Strontianite ()*	Aragonite	Sr(CO₃)	704	654	589

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000956	MAGMATIC STYLE: 1x1.5 km intrusion, including sills and dykes. ASSOCIATED SILICATE ROCKS: Fenite.

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Jen_0000956	704	654	679±25	K-Ar			phlogopite				Phlogopite			31173	Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia	Nkombwa	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
	ree-00795	704	654	Late Proterozoic-- 679 ± 25 Ma (K-Ar, phlo, carbonatite)	K-Ar			phlogopite				Phlogopite			31173	Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia	Nkombwa Hill (Nkumbwa, Nkumba)	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...