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:
Innansjön, Burträsk, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden

Oldest recorded age at locality: 1902
Youngest recorded age at locality: 1794

mindat Locality ID: 10666
mindat URL: http://www.mindat.org/loc-10666.html

Tectonic Settings:

Total number of sublocalities beneath "Innansjön, Burträsk, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden": 0
Total number of bottom-level sublocalities: 0

Latitude: 64°28'55"N
Longitude: 20°31'56"E
Decimal Degree (lat, lon): 64.481944444444,20.532222222222

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	Brucite	Calcite	Chalcopyrite	Clay	Clinozoisite	Corundum	Diaspore	Epidote	Feldspar
Humite	Molybdenite	None	Olivine	Pyrite	Pyroxene	Rutile	Scheelite	Serpentine	Spinel
Talc	Titanite	Vesuvianite	Wollastonite	Zircon

Actinolite ()*	Albite ()*	Brucite ()*	Calcite ()*	Chalcopyrite ()*
Chondrodite ()*	Chrysotile ()*	Clinozoisite ()*	Diopside ()*	Dolomite ()*
Epidote ()*	Forsterite ()*	Goethite ()*	Graphite ()*	Humite ()*
Ilmenite ()*	Magnetite ()*	Molybdenite ()*	Powellite ()*	Pyrite ()*
Rutile ()*	Scheelite ()*	Spinel ()*	Talc ()*	Titanite ()*
Tremolite ()*	Vesuvianite ()*	Wollastonite ()*	Zircon ()*	Zoisite ()*

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 C Ca Cu F Fe H Mg Mo Na O S Si Ti W Zr

Elements from minerals reported directly at this locality: Al C Ca Cu F Fe H Mg Mo Na O S Si Ti W Zr

Structural Groups for minerals in this locality:
Amphibole Brucite Calcite Chalcopyrite Clay Clinozoisite Corundum Diaspore Epidote Feldspar
Humite Molybdenite None Olivine Pyrite Pyroxene Rutile Scheelite Serpentine Spinel
Talc Titanite Vesuvianite Wollastonite Zircon

30 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	1902	1794	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	1902	1794	8803
Brucite ()*	Brucite	Mg(OH)₂	1902	1794	462
Calcite ()*	Calcite	Ca(CO₃)	1902	1794	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1902	1794	27198
Chondrodite ()*	Humite	Mg₅(SiO₄)₂F₂	1902	1794	285
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	1902	1794	951
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1902	1794	1025
Diopside ()*	Pyroxene	CaMgSi₂O₆	1902	1794	4135
Dolomite ()*	None	CaMg(CO₃)₂	1902	1794	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1902	1794	8173
Forsterite ()*	Olivine	Mg₂(SiO₄)	1902	1794	1188
Goethite ()*	Diaspore	FeO(OH)	1902	1794	7437
Graphite ()*	None	C	1902	1794	2812
Humite ()*	Humite	Mg₇(SiO₄)₃F₂	1902	1794	80
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1902	1794	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1902	1794	14899
Molybdenite ()*	Molybdenite	MoS₂	1902	1794	5800
Powellite ()*	Scheelite	Ca(MoO₄)	1902	1794	494
Pyrite ()*	Pyrite	FeS₂	1902	1794	39462
Rutile ()*	Rutile	TiO₂	1902	1794	5614
Scheelite ()*	Scheelite	Ca(WO₄)	1902	1794	4894
Spinel ()*	Spinel	MgAl₂O₄	1902	1794	1934
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	1902	1794	3337
Titanite ()*	Titanite	CaTi(SiO₄)O	1802	1794	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	1902	1794	2562
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	1902	1794	1395
Wollastonite ()*	Wollastonite	CaSiO₃	1902	1794	1247
Zircon ()*	Zircon	Zr(SiO₄)	1893	1884.6	5251
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1902	1794	1025

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000492	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000493	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000494	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000495	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000496	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000497	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000498	The Melestjärn mass flow is considered to be the uppermost part of volcanic stratigraphy of the Skellefte mining district.
Giersdorf_00000515	The Boliden area consists of volcanic rocks with an epigenetic gold source, and is part of the Skellefte Mining District.

13 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Num	Age from other Locality	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Giersdorf_00000517	1802	1794	1798				91019	Yes	Titanite	304392	Skellefteå, Västerbotten County, Sweden	Skellefte	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
MD29_150_Skellefte	1900	1870	1870-1900	U-Pb				Yes		23797	Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Skellefte mining district	Hallberg (1994)	10.1007/BF00191512	MD29_150	U-Pb zircon dating of volcanic rocks and early orogenic intrusives in the Los, Bergslagen, and Skellefte districts yields ages of 1.87-1.90 Ga (Welin et al, 1980, Åberg et al. 1984; Åberg and Strömberg 1984; Wilson et al. 1985; Welin 1987; Claesson and Lundqvist 1990). Dating ofvo1canic rocks in central and southern Finland have also yielded U-Pb zircon ages of 1.87-1.90 Ga (Ah o 1979; Helovuori 1979; Patchett and Kouvo 1986; Welin 1987). This indicates that deposition of vo1canic rocks occurred over a time interval of about 30 M yrs in the central part of the Baltic Shield.
Giersdorf_00000516	1870	1870	1870	U-Pb			94002	Yes	Zircon	10632	Åkerberg Mine, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Åkerberg Mine	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000515	1870	1870	1870	U-Pb	Age is suspected to be approximately 1870 Ma, during which an extensional period of tectonic activity weakened the mantle and provided access for heavier materials to ascend upwards		bh 428	Yes	Zircon	207492	Boliden, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Boliden area	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000492	1890	1890	1890	U-Pb			91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000493	1890	1890	1902	U-Pb			91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000494	1890	1890	1902	U-Pb			91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000495	1902	1902	1902	U-Pb			91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000496	1884	1884	1884	U-Pb			91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000497	1873	1873	1873	U-Pb			91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000498	1893	1884.6	1888.8±4.2	U-Pb		high	91016	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Melestjärn mass flow	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054	Intercept age for the Pb206/207 concordia
Giersdorf_00000518	1885	1885	1885	U-Pb			91066	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Tallberg Deposit	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054
Giersdorf_00000519	1885	1885	1885	U-Pb			91065	Yes	Zircon	33241	Tallberg Prospect, Skellefte Mining District, Skellefteå, Västerbotten County, Sweden	Tallberg Deposit	Billstrom et al. (1996)	10.2113/gsecongeo.91.6.1054	EG91_1054

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...