Element mobility in crystalline rock around open fractures at Palmottu

Heikki Kumpulainen, Petteri Pitkänen, Matti Valkiainen, Avner Melamed, Pentti Manninen

Research output: Book/ReportReport

Abstract

Rock specimens adjacent to two water conducting fractures at a depth of about 205 m from the Palmottu uranium deposit were studied in order to obtain information on element mobility. The drill core was sawn in such a way that a series of specimens perpendicular to the water conducting fracture were obtained for each of the fractures. Concentration profiles for a number of elements were determined. Uranium series disequilibrium studies as well as petrographic studies and porosity determinations were also performed. In spite of the closeness of the fractures (only 67 cm apart) they were different in character. Hardly any mobilization was observed for the lower fracture but for the upper fracture several elements had been mobilized, while many remained immobile. Elements such as Na, Ca, Al, Si and U were enriched adjacent to the upper fracture. At the same time Fe, Sc, Co, S and Cu remained immobile. Elemental concentration data analysis provided also for the alteration depth about 25 mm. The conditions have been reducing for very long times.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages33
ISBN (Print)951-38-4213-4
Publication statusPublished - 1992
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes
Number1399
ISSN1235-0605

Fingerprint

element mobility
crystalline rock
uranium
disequilibrium
mobilization
porosity
water
rock

Keywords

  • elements
  • mobility
  • igneous rocks
  • metamorphic rocks
  • fractures
  • ground water
  • uranium deposits
  • Palmottu

Cite this

Kumpulainen, H., Pitkänen, P., Valkiainen, M., Melamed, A., & Manninen, P. (1992). Element mobility in crystalline rock around open fractures at Palmottu. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1399
Kumpulainen, Heikki ; Pitkänen, Petteri ; Valkiainen, Matti ; Melamed, Avner ; Manninen, Pentti. / Element mobility in crystalline rock around open fractures at Palmottu. Espoo : VTT Technical Research Centre of Finland, 1992. 33 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1399).
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Kumpulainen, H, Pitkänen, P, Valkiainen, M, Melamed, A & Manninen, P 1992, Element mobility in crystalline rock around open fractures at Palmottu. VTT Tiedotteita - Meddelanden - Research Notes, no. 1399, VTT Technical Research Centre of Finland, Espoo.

Element mobility in crystalline rock around open fractures at Palmottu. / Kumpulainen, Heikki; Pitkänen, Petteri; Valkiainen, Matti; Melamed, Avner; Manninen, Pentti.

Espoo : VTT Technical Research Centre of Finland, 1992. 33 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1399).

Research output: Book/ReportReport

TY - BOOK

T1 - Element mobility in crystalline rock around open fractures at Palmottu

AU - Kumpulainen, Heikki

AU - Pitkänen, Petteri

AU - Valkiainen, Matti

AU - Melamed, Avner

AU - Manninen, Pentti

PY - 1992

Y1 - 1992

N2 - Rock specimens adjacent to two water conducting fractures at a depth of about 205 m from the Palmottu uranium deposit were studied in order to obtain information on element mobility. The drill core was sawn in such a way that a series of specimens perpendicular to the water conducting fracture were obtained for each of the fractures. Concentration profiles for a number of elements were determined. Uranium series disequilibrium studies as well as petrographic studies and porosity determinations were also performed. In spite of the closeness of the fractures (only 67 cm apart) they were different in character. Hardly any mobilization was observed for the lower fracture but for the upper fracture several elements had been mobilized, while many remained immobile. Elements such as Na, Ca, Al, Si and U were enriched adjacent to the upper fracture. At the same time Fe, Sc, Co, S and Cu remained immobile. Elemental concentration data analysis provided also for the alteration depth about 25 mm. The conditions have been reducing for very long times.

AB - Rock specimens adjacent to two water conducting fractures at a depth of about 205 m from the Palmottu uranium deposit were studied in order to obtain information on element mobility. The drill core was sawn in such a way that a series of specimens perpendicular to the water conducting fracture were obtained for each of the fractures. Concentration profiles for a number of elements were determined. Uranium series disequilibrium studies as well as petrographic studies and porosity determinations were also performed. In spite of the closeness of the fractures (only 67 cm apart) they were different in character. Hardly any mobilization was observed for the lower fracture but for the upper fracture several elements had been mobilized, while many remained immobile. Elements such as Na, Ca, Al, Si and U were enriched adjacent to the upper fracture. At the same time Fe, Sc, Co, S and Cu remained immobile. Elemental concentration data analysis provided also for the alteration depth about 25 mm. The conditions have been reducing for very long times.

KW - elements

KW - mobility

KW - igneous rocks

KW - metamorphic rocks

KW - fractures

KW - ground water

KW - uranium deposits

KW - Palmottu

M3 - Report

SN - 951-38-4213-4

T3 - VTT Tiedotteita - Meddelanden - Research Notes

BT - Element mobility in crystalline rock around open fractures at Palmottu

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Kumpulainen H, Pitkänen P, Valkiainen M, Melamed A, Manninen P. Element mobility in crystalline rock around open fractures at Palmottu. Espoo: VTT Technical Research Centre of Finland, 1992. 33 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1399).