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:
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

mindat Locality ID: 1968
mindat URL: http://www.mindat.org/loc-1968.html

Tectonic Settings:

Total number of sublocalities beneath "Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea": 0
Total number of bottom-level sublocalities: 0

Latitude: 9°27'50"N
Longitude: 13°47'45"W
Decimal Degree (lat, lon): 9.4638888888889,-13.795833333333

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.

Amphibole	Analcime	Apatite	Astrophyllite	Calcite	Cancrinite	Cancrinite-sodalite	Catapleiite	Clay	Corundum
Eudialyte	Feldspar	Fluorite	Garnet	Mica	Molybdenite	Natrolite	Nickeline	None	Pectolite
Pyrite	Pyroxene	Rocksalt	Sodalite	Sphalerite	Spinel	Steacyite	Titanite	Tridymite	Wöhlerite
Zircon

Aegirine ()*	Albite ()*	Analcime ()*	Arfvedsonite ()*	Astrophyllite ()*
Augite ()*	Calcite ()*	Cancrinite ()*	Catapleiite ()*	Eudialyte ()*
Fluorapatite ()*	Fluorite ()*	Galena ()*	Gibbsite ()*	Grossular ()*
Hastingsite ()*	Hiortdahlite ()*	Ilmenite ()*	Kupletskite ()*	Låvenite ()*
Leucophanite ()*	Magnetite ()*	Microcline ()*	Molybdenite ()*	Muscovite ()*
Natrolite ()*	Nepheline ()*	Pyrite ()*	Pyrophanite ()*	Pyrrhotite ()*
Rinkite-(Ce) ()*	Rosenbuschite ()*	Roumaite ()*	Serandite ()*	Sodalite ()*
Sphalerite ()*	Steacyite ()*	Titanite ()*	Villiaumite ()*	Vishnevite ()*
Wöhlerite ()*	Zircon ()*

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 Be C Ca Ce Cl F Fe H K Mg Mn Mo Na Nb O P Pb REE S Si Th Ti Zn Zr

Elements from minerals reported directly at this locality: Al Be C Ca Cl F Fe H K Mg Mn Mo Na Nb O P Pb REE S Si Th Ti Zn Zr

Structural Groups for minerals in this locality:
Amphibole Analcime Apatite Astrophyllite Calcite Cancrinite Cancrinite-sodalite Catapleiite Clay Corundum
Eudialyte Feldspar Fluorite Garnet Mica Molybdenite Natrolite Nickeline None Pectolite
Pyrite Pyroxene Rocksalt Sodalite Sphalerite Spinel Steacyite Titanite Tridymite Wöhlerite
Zircon

42 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	1022
Albite ()*	Feldspar	Na(AlSi₃O₈)	8803
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	1627
Arfvedsonite ()*	Amphibole	NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂	295
Astrophyllite ()*	Astrophyllite	K₂NaFe²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F	161
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	2060
Calcite ()*	Calcite	Ca(CO₃)	27770
Cancrinite ()*	Cancrinite	(Na,Ca, )₈(Al₆Si₆)O₂₄(CO₃,SO₄)₂·2H₂O	232
Catapleiite ()*	Catapleiite	Na₂Zr(Si₃O₉)·2H₂O	113
Eudialyte ()*	Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	182
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	2740
Fluorite ()*	Fluorite	CaF₂	9617
Galena ()*	Rocksalt	PbS	24243
Gibbsite ()*	None	Al(OH)₃	504
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	1544
Hastingsite ()*	Amphibole	NaCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂	209
Hiortdahlite ()*	Wöhlerite	Na₂Ca₄(Ca_0.5Zr_0.5)Zr(Si₂O₇)₂OF₃	21
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	5433
Kupletskite ()*	Astrophyllite	K₂NaMn²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F	33
Låvenite ()*	Wöhlerite	(Na,Ca)₄(Mn²⁺,Fe²⁺)₂(Zr,Ti,Nb)₂(Si₂O₇)₂(O,F)₄	58
Leucophanite ()*	None	NaCaBeSi₂O₆F	55
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	4924
Molybdenite ()*	Molybdenite	MoS₂	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	1236
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	884
Pyrite ()*	Pyrite	FeS₂	39462
Pyrophanite ()*	Corundum	Mn²⁺TiO₃	244
Pyrrhotite ()*	Nickeline	Fe₇S₈	9056
Rinkite-(Ce) ()*	None	(Ca₃REE)Na(NaCa)Ti(Si₂O₇)₂(OF)F₂	53
Rosenbuschite ()*	None	Ca₆Zr₂Na₆ZrTi(Si₂O₇)₄(OF)₂F₄	42
Roumaite ()*	None	(Nb,Ti)(Ca,Na, )₃(Ca,REE)₄(Si₂O₇)₂(OH)F₃	1
Serandite ()*	Pectolite	NaMn²⁺₂Si₃O₈(OH)	38
Sodalite ()*	Cancrinite-sodalite Sodalite	Na₄(Si₃Al₃)O₁₂Cl	444
Sphalerite ()*	Sphalerite	ZnS	21482
Steacyite ()*	Steacyite	K_0.3(Na,Ca)₂ThSi₈O₂₀	8
Titanite ()*	Titanite	CaTi(SiO₄)O	4899
Villiaumite ()*	Rocksalt	NaF	31
Vishnevite ()*	Cancrinite-sodalite Cancrinite	Na₈(Al₆Si₆)O₂₄(SO₄)·2H₂O	21
Wöhlerite ()*	Wöhlerite	Na₂Ca₄Zr(Nb,Ti)(Si₂O₇)₂(O,F)₄	83
Zircon ()*	Zircon	Zr(SiO₄)	5251

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...