Mineralogy Database

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101 samples matching your criteria

Sample n° 4547 : crust of black crystals (1 cm) on block of chalcedony
Minerals: LIBETHENITE CHALCEDONY (quartz)     Year:     Country: Congo (RDC)

Sample n° 2468 : zoned chalcedony with geodes of microcrystalline quartz
Minerals: CHALCEDONY (quartz) QUARTZ     Year: 1937     Country: Congo (RDC)

Sample n° 4710 : olive-green coatings (chalcedony)
Minerals: CHALCEDONY (quartz) KATANGITE (plancheite)     Year:     Country: Congo (RDC)

Sample n° 10070 : red and purple veined block
Minerals: CHALCEDONY (quartz)     Year: 1964     Country: Congo (RDC)

Sample n° 13438 : white block with conchoidal fracture, blue spots
Minerals: CHALCEDONY (quartz)     Year: 1976     Country: Madagascar

Sample n° 5834 : sawn block (20 cm), septarian concretion
Minerals: CHALCEDONY (quartz)     Year:     Country: Congo (RDC)

Sample n° 12495 : brown block with conchoidal fractures (8 cm)
Minerals: CHALCEDONY (quartz)     Year: 1970     Country: Rwanda

Sample n° 12108 : sample with pseudomalachite as green nodules and as small crystals on nodules, white chalcedony (radioactive sample)
Minerals: PSEUDOMALACHITE CHALCEDONY (quartz)     Year: 1969     Country: France

Sample n° 3535 : sample with long prismatic uranophane-beta crystals, uraninite nodules, traces of meta-autunite
Minerals: META-AUTUNITE PYRITE URANINITE URANOPHANE-BETA CHALCEDONY (quartz)     Year: 1953     Country: France

Sample n° 14008 : fragments (1-3 cm)
Minerals: AGATE (quartz) CHALCEDONY (quartz)     Year: 1983     Country: USA

Sample n° 7109 : geodic rock
Minerals: CHALCEDONY (quartz)     Year:     Country: Congo (RDC)

Sample n° 12546 : banded fragments
Minerals: CHALCEDONY (quartz)     Year: 1921     Country: Angola

Sample n° 12597 : banded grey-white and pink-white blocks (8 and 15 cm)
Minerals: CHALCEDONY (quartz)     Year: 1971     Country: Burundi

Sample n° 12102 : sample with green-yellow tabular parsonsite crystals
Minerals: PARSONSITE CHALCEDONY (quartz) META-AUTUNITE METATORBERNITE     Year: 1969     Country: France

Sample n° 12105 : sample with well-developed metatorbernite crystals
Minerals: METATORBERNITE CHALCEDONY (quartz) META-AUTUNITE PYRITE     Year: 1969     Country: France

Sample n° 12109 : sample with yellow parsonsite crystals, brown powdery hollandite nodules, green chalcedony, dendritic black oxides
Minerals: HOLLANDITE PARSONSITE CHALCEDONY (quartz) META-AUTUNITE     Year: 1969     Country: France

Sample n° 12111 : no description available
Minerals: META-AUTUNITE CHALCEDONY (quartz) HEMATITE METATORBERNITE     Year: 1969     Country: France

Sample n° 12112 : no description available
Minerals: CHALCEDONY (quartz) META-AUTUNITE METATORBERNITE     Year: 1969     Country: France

Sample n° 14208 : oval polished stone (2.52 g)
Minerals: AGATE (quartz) CHALCEDONY (quartz)     Year: 1983     Country: India

Sample n° 11934 : reniform geodes with yellow and white bands (20 cm)
Minerals: CHALCEDONY (quartz) QUARTZ     Year: 1968     Country: France

Sample n° 11658 : thick coating, with well-developed crystals along surface
Minerals: QUARTZ CHALCEDONY (quartz)     Year: 1967     Country: Austria