Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Ages for Polycrase-(Y) at Namakwa District (Namaqualand), Northern Cape, South Africa

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of Ma - Ma at this locality

Mineralization age

Excel ID	Max Age (Ma)	Min Age (Ma)	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Alexandra-0249	988	977.4	Ta,Nb	56220	Orange River, Namakwa District (Namaqualand), Northern Cape, South Africa	Melcher et al. (2015)	OGR64_667
Alexandra-0250	984.7	978.1	Ta,Nb	56220	Orange River, Namakwa District (Namaqualand), Northern Cape, South Africa	Melcher et al. (2015)	OGR64_667
Alexandra-0251	987.7	982.1	Ta,Nb	56220	Orange River, Namakwa District (Namaqualand), Northern Cape, South Africa	Melcher et al. (2015)	OGR64_667

Locality age

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Jen_0000672	74.6	74.6				27329	Salpeterkop Mountain (Saltpetre Kop), Sutherland, Namakwa District (Namaqualand), Northern Cape, South Africa	Woolley and Kjarsgaard (2008)	GSCOF5796
Jen_0000673	78.1	75.5				27329	Salpeterkop Mountain (Saltpetre Kop), Sutherland, Namakwa District (Namaqualand), Northern Cape, South Africa	Woolley and Kjarsgaard (2008)	GSCOF5796
Jen_0000674	73.7	71.3				27329	Salpeterkop Mountain (Saltpetre Kop), Sutherland, Namakwa District (Namaqualand), Northern Cape, South Africa	Woolley and Kjarsgaard (2008)	GSCOF5796
Kristen002255	1018	954	Molybdenite		W,Mo	57343	Namaqualand Metamorphic Complex, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Han et al. (2014)	RG64_136
Mo-00268	1031	950	Molybdenite	Molybdenite	Mo	53587	Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00269	958	950	Molybdenite		Mo	53600	Narrap Mine, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00270	1031	1021	Molybdenite		Mo	53600	Narrap Mine, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00436	1010	1002	Molybdenite		Mo	206057	Tweedam Mine, Springbok, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00437	1004	996	Molybdenite		Mo	206057	Tweedam Mine, Springbok, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00438	1015	1007	Molybdenite		Mo	206059	Nababeep Far West Mine, Nababeep Tungsten Mines, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00439	1022	1014	Molybdenite		Mo	206060	Kliphoog Mine, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
Mo-00440	1019	1011	Molybdenite		Mo	206060	Kliphoog Mine, Okiep Copper District, Namakwa District (Namaqualand), Northern Cape, South Africa	Raith and Stein (2000)	MD35_741
ree-00575	2.6	0.01				57098	Richards Bay, Namakwa District (Namaqualand), Northern Cape, South Africa	Orris and Grauch (2002)	USGSOFR02_189
sedexmvt-00204	1600	1400				53698	Big Syncline (Aggeneysberg), Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Taylor et al. (2009)	USGSOFR2009_1297
sedexmvt-00205	1285	1198				53700	Black Mountain (Swartberg Mine), Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Taylor et al. (2009)	USGSOFR2009_1297
sedexmvt-00206	1285	1198				5550	Broken Hill Mine, Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Taylor et al. (2009)	USGSOFR2009_1297
sedexmvt-00208	1285	1198				53701	Gamsberg Zinc Mine, Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Taylor et al. (2009)	USGSOFR2009_1297
sedznpb-00398	1739	1559				53698	Big Syncline (Aggeneysberg), Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Singer et al. (2009)	USGSOFR2009-1252
sedznpb-00399	1739	1559				53700	Black Mountain (Swartberg Mine), Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Singer et al. (2009)	USGSOFR2009-1252
sedznpb-00400	1739	1559				5550	Broken Hill Mine, Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Singer et al. (2009)	USGSOFR2009-1252
sedznpb-00402	1739	1559				53701	Gamsberg Zinc Mine, Aggeneys, Namakwa District (Namaqualand), Northern Cape, South Africa	Singer et al. (2009)	USGSOFR2009-1252