Mineralogy Database

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100 samples matching your criteria

Sample n° 1003.2 : pink limestone with crust of blue needles, olive-green crust
Minerals: CHALCEDONY (quartz)     Year: 1937     Country: Congo (RDC)

Sample n° 1066 : bluish geodes in massive hematite
Minerals: CHALCEDONY (quartz) HEMATITE     Year:     Country: Congo (RDC)

Sample n° 9540.1 : blue geodic block (7 cm)
Minerals: CHALCEDONY (quartz) OPAL     Year:     Country: Rwanda

Sample n° 2482 : small geodes in quartzite
Minerals: CHALCEDONY (quartz) QUARTZ     Year:     Country: Congo (RDC)

Sample n° 2483 : concretionary geodic block
Minerals: CHALCEDONY (quartz) QUARTZ     Year:     Country: Congo (RDC)

Sample n° 2484 : concretionary geodic block
Minerals: CHALCEDONY (quartz) QUARTZ     Year:     Country: Congo (RDC)

Sample n° 14210 : polished cat's eye (0.25 g)
Minerals: CHALCEDONY (quartz) AGATE (quartz)     Year: 1983     Country: Sri Lanka

Sample n° 3128 : sample with autunite covered by chalcedony, on micaschist with tourmaline
Minerals: CHALCEDONY (quartz) AUTUNITE TOURMALINE     Year: 1952     Country: Congo (RDC)

Sample n° 1051 : block with quartz crystals (amethyst), covered by chalcedony
Minerals: CHALCEDONY (quartz) AMETHYST (quartz)     Year: 1938     Country: Congo (RDC)

Sample n° 9551 : reddish block with conchoidal fracture (22 cm)
Minerals: CHALCEDONY (quartz) OPAL QUARTZ     Year:     Country: Rwanda

Sample n° 11168 : nodules and banded geodes with calcite core in red rock substrate
Minerals: CHALCEDONY (quartz) CALCITE     Year: 1966     Country: Germany

Sample n° 3187 : red veinlet in quartz
Minerals: CHALCEDONY (quartz) QUARTZ     Year: 1947     Country: Congo (RDC)

Sample n° 3520 : pink material on iron-bearing rock
Minerals: CHALCEDONY (quartz) QUARTZ     Year:     Country: Congo (RDC)

Sample n° 3527 : veined green block
Minerals: CHALCEDONY (quartz) QUARTZ     Year:     Country: Congo (RDC)

Sample n° 3536 : sample with well-developed beige parsonsite crystals, smoky quartz
Minerals: PARSONSITE CHALCEDONY (quartz) METATORBERNITE QUARTZ     Year: 1953     Country: France

Sample n° 3611 : reniform concretion in geode
Minerals: CHALCEDONY (quartz) QUARTZ     Year:     Country: Congo (RDC)

Sample n° 10062 : geode of clear prismatic crystals on massive chalcedony
Minerals: QUARTZ CHALCEDONY (quartz)     Year: 1964     Country: Congo (RDC)

Sample n° 10064 : red prismatic crystals (1-3 cm)
Minerals: QUARTZ CHALCEDONY (quartz)     Year: 1964     Country: Congo (RDC)

Sample n° 10065 : large plate of red prismatic crystals (1-2 cm)
Minerals: QUARTZ CHALCEDONY (quartz)     Year: 1964     Country: Congo (RDC)

Sample n° 10069 : geode of quartz crystals (5 mm), pistachio-green elongated epidote crystal
Minerals: QUARTZ CHALCEDONY (quartz) EPIDOTE     Year: 1964     Country: Congo (RDC)