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? PROBABLY SAPONITE (SOAPSTONE). GREY-GREEN BLACK

Naturalis Biodiversity Center

HORNBLENDE, BIOTITE

Naturalis Biodiversity Center

HORNBLENDE

Naturalis Biodiversity Center

CHALCEDONY VAR. JASPER

Naturalis Biodiversity Center

CHALCEDONY VAR. JASPER. GREEN

Naturalis Biodiversity Center

CHALCEDONY VAR. JASPER. GREEN. "PLASMA"

Naturalis Biodiversity Center

CHALCEDONY VAR. JASPER. GREEN

Naturalis Biodiversity Center

CHALCEDONY VAR. JASPER. GREEN

Naturalis Biodiversity Center

CHALCEDONY VAR. CELLULAR CHALCEDONY

Naturalis Biodiversity Center

CHALCEDONY VAR. "GREEN MOSS AGATE"

Naturalis Biodiversity Center

GARNET

Naturalis Biodiversity Center

GARNET

Naturalis Biodiversity Center

GARNET VAR. ALMANDINE

Naturalis Biodiversity Center

BIOTITE

Naturalis Biodiversity Center

CHALCEDONY VAR. CARNELIAN (= CORNELIAN)

Naturalis Biodiversity Center

CHALCEDONY VAR. CARNELIAN (= CORNELIAN)

Naturalis Biodiversity Center

CHALCEDONY PEBBLES (ERRATICS)

Naturalis Biodiversity Center

CHALCEDONY PSEUDOMORPH AFTER CALCITE

Naturalis Biodiversity Center

CHALCEDONY. (FIBROUS STRUCTURE ON THE SURFACE)

Naturalis Biodiversity Center

CHALCEDONY. (RENIFORM HABIT)

Naturalis Biodiversity Center

CHALCEDONY. (RENIFORM HABIT)

Naturalis Biodiversity Center

CHALCEDONY. (RENIFORM HABIT)

Naturalis Biodiversity Center

?

Naturalis Biodiversity Center

CHALCEDONY

Naturalis Biodiversity Center

CHALCEDONY

Naturalis Biodiversity Center