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:
Asmara, Maekel Region (Maakel Region; Central Region), Eritrea

Oldest recorded age at locality: 2500
Youngest recorded age at locality: 541

mindat Locality ID: 28803
mindat URL: http://www.mindat.org/loc-28803.html

Tectonic Settings:

Total number of sublocalities beneath "Asmara, Maekel Region (Maakel Region; Central Region), Eritrea": 8
Total number of bottom-level sublocalities: 7

Number of Child Localities: 6
Child Localities:
Adi Kontsi (Adì Contsi)
Adi Nefas Doop (Gupo)
Debarwa
Hara Hot
Medrizien (Medrì Zièn)
Sciumagallé Mine (Shemagele Mine; Adi Shemagle)

Latitude: 15°14'59"N
Longitude: 38°55'6"E
Decimal Degree (lat, lon): 15.249722222222,38.918333333333

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.

Chalcopyrite	Copper	None	Pyrite	Quartz	Sphalerite

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: Au C Ca Cu Fe O S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Chalcopyrite Copper None Pyrite Quartz Sphalerite

7 IMA Minerals at location:

Ankerite ()*	Bornite ()*	Chalcopyrite ()*	Gold ()*	Pyrite ()*
Quartz ()*	Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	2500	541	1	49432	3092
Bornite ()*	None	Cu₅FeS₄	2500	541	1	49434	5516
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2500	541	2	49433,49434	27198
Gold ()*	Copper	Au	2500	541	5	49427,49428,49432,49433,49434	30554
Pyrite ()*	Pyrite	FeS₂	2500	541	4	49427,49428,49433,49434	39462
Quartz ()*	Quartz	SiO₂	2500	541	5	49427,49428,49432,49433,49434	61156
Sphalerite ()*	Sphalerite	ZnS	2500	541	1	49434	21482

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age from other Locality	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
vms-00466	1800	1800	Proterozoic		S	215101	Adi Nefas Doop (Gupo), Asmara, Maekel Region (Maakel Region; Central Region), Eritrea	Adi Nefas	Moiser et al. (2009)	USGSOFR2009_1034
vms-00467	854	854	Neoproterozoic		S	10518	Debarwa Mine, Debarwa, Asmara, Maekel Region (Maakel Region; Central Region), Eritrea	Debarwa	Moiser et al. (2009)	USGSOFR2009_1034
vms-00468	2500	541	Proterozoic	Yes		256910	Emba Derho, Maekel Region (Maakel Region; Central Region), Eritrea	Emba Derho	Moiser et al. (2009)	USGSOFR2009-1034

All locality data graciously provided by mindat.org

All age data...