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:
Basay Mine (Muhong Mine), Basay, Negros Island, Negros Oriental Province, Negros Island Region, Visayas, Philippines

Oldest recorded age at locality: 33.9
Youngest recorded age at locality: 23

mindat Locality ID: 8577
mindat URL: http://www.mindat.org/loc-8577.html

Tectonic Settings:

Total number of sublocalities beneath "Basay Mine (Muhong Mine), Basay, Negros Island, Negros Oriental Province, Negros Island Region, Visayas, Philippines": 0
Total number of bottom-level sublocalities: 0

Latitude: 9°29'30"N
Longitude: 122°40'45"E
Decimal Degree (lat, lon): 9.4916666666667,122.67916666667

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	Alunite	Amphibole	Chalcopyrite	Clay	Clinozoisite	Copper	Corundum	Covellite	Epidote
Gypsum	Malachite	Mica	Molybdenite	None	Not in a structural group	Pyrite	Rocksalt	Sphalerite	Spinel
Tetrahedrite

Actinolite ()*	Anhydrite ()*	Azurite ()*	Bornite ()*	Chalcocite ()*
Chalcopyrite ()*	Chrysocolla ()*	Covellite ()*	Epidote ()*	Galena ()*
Gold ()*	Gypsum ()*	Hematite ()*	Jarosite ()*	Magnetite ()*
Malachite ()*	Molybdenite ()*	Muscovite ()*	Phlogopite ()*	Pyrite ()*
Sphalerite ()*	Tetrahedrite-(Zn) ()*

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 Au C Ca Cu Fe H K Mg Mo O Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Al Au C Ca Cu Fe H K Mg Mo O Pb S Sb Si Zn

Structural Groups for minerals in this locality:
Allophane Alunite Amphibole Chalcopyrite Clay Clinozoisite Copper Corundum Covellite Epidote
Gypsum Malachite Mica Molybdenite None Not in a structural group Pyrite Rocksalt Sphalerite Spinel
Tetrahedrite

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	33.9	23	3419
Anhydrite ()*	Not in a structural group	Ca(SO₄)	33.9	23	1588
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	33.9	23	5509
Bornite ()*	None	Cu₅FeS₄	33.9	23	5516
Chalcocite ()*	None	Cu₂S	33.9	23	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	33.9	23	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	33.9	23	3531
Covellite ()*	Covellite	CuS	33.9	23	4165
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	33.9	23	8173
Galena ()*	Rocksalt	PbS	33.9	23	24243
Gold ()*	Copper	Au	33.9	23	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	33.9	23	6890
Hematite ()*	Corundum	Fe₂O₃	33.9	23	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	33.9	23	2228
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	33.9	23	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	33.9	23	12537
Molybdenite ()*	Molybdenite	MoS₂	33.9	23	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	33.9	23	17380
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	33.9	23	2273
Pyrite ()*	Pyrite	FeS₂	33.9	23	39462
Sphalerite ()*	Sphalerite	ZnS	33.9	23	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	33.9	23	5317

1 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
	PorphCu-00028	33.9	23	Oligocene									Actinolite, Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Epidote, Galena, Gold, Jarosite, Magnetite, Molybdenite, Phlogopite, Pyrite, Sphalerite	Cu	8577	Basay Mine (Muhong Mine), Basay, Negros Island, Negros Oriental Province, Negros Island Region, Visayas, Philippines	Basay	Singer et al. (2008)		USGSOFR2008_1155

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...