Acanthite Ag2 S
Acanthite (group) , Silver sulphide —
Open
Acanthite specimen from Arizpe, Sonora, Mexico
Photo by Ken Larsen, via Smithsonian National Museum of Natural History
1
3
1
SXES
Mineral, Sulphide
Acmite NaFeIII Si2 O6
Clinopyroxene —
1
0
0
—
—
Actinolite ☐Ca2 (Mg4.5-2.5 FeII 0.5-2.5 )Si8 O22 (OH)2
Minerals containing OH , Actinolite root name group , Ferro-actinolite-Tremolite (series) —
Open
Actinolite specimen from White River, Wenatchee National Forest, WA, USA
Photo by Penland, via Smithsonian National Museum of Natural History
7
2
2
Reflectance
Mineral, Silicate , Hydroxide
Adamite Zn2 (AsO4 )(OH)
Minerals containing OH , Minerals containing AsO4 , Olivenite (group) —
Open
Adamite on limonite, from Mina Ojuela, Mapimi, Durango, Mexico. Size: 6.6 x 4.8 x 4.2 cm
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
1
5
0
PL
Hydroxide , Mineral, Arsenate
Adularia KAlSi3 O8
K feldspar —
Open
Adularia specimen from San Gottardo, Ticino, Switzerland
Photo by Smithsonian Photographic Services
2
27
3
CL/SEM, SXES
Aluminosilicate , Variety
Aegirine NaFeIII Si2 O6
Clinopyroxene —
Open
Aegirine crystals from Mt Malosa, Zomba District, Malawi. Size: 7.2 x 4.8 x 3.3 cm.
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
2
0
0
—
Mineral, Silicate
Afghanite (Na,K)22 Ca10 (Si24 Al24 )O96 (SO4 )6 Cl6
Minerals containing SO4 , Calcrinite (group) —
Open
Image of specimen 'Afghanite NMNH R19826-00' (Smithsonian Institution - National Mineral Collection) from Kokcha Valley, Kuran wa Munjan District, Badakhshan Province, Afghanistan
Photo by Penland, Smithsonian Institution, Public Domain
0
13
0
PL
Mineral, Sulphate , Halide , Aluminosilicate
Afwillite Ca3 [SiO3 (OH)]2 ·2H2 O
Minerals containing OH , Minerals containing H2O —
Open
1.03 mm group of Afwillite crystals. Collection Domenico Preite photo Matteo Chinellato. From Campomorto Quarry, Pietra Massa Locality, Montalto di Castro, Viterbo Province, Latium, Italy
(C) 2010 Matteo Chinellato (via Wikimedia Commons). CC-BY-SA-3.0
0
7
0
IR
Hydroxide , Mineral, Silicate , Hydrated
Agate SiO2
Quartz, microcrystalline Youngite
Open
Condor agate from the mountain range near San Rafael City, in Mendoza Province, Argentina.
Photo by Luis de los Santos (via Wikimedia Commons), CC-BY-SA 3.0
0
3
6
CL
Variety, Simple oxide
Agrellite NaCa2 Si4 O10 F
—
—
Open
Fluorescent agrellite, Museo di Storia Naturale (Florence)
Photograph by Sailko (via Wikimedia Commons), CC-BY-SA 3.0
1
15
0
PL, PL/XL
Mineral, Silicate
Akaganeite (FeIII ,NiII )8 (OH,O)16 Cl1.25 ·n H2 O
Minerals containing OH , Minerals containing H2O —
1
0
0
—
Mineral, Hydrated , Hydroxide
Albite NaAlSi3 O8 , (Na,Ca)(Si,Al)4 O8
Alkali feldspar , Plagioclase —
Open
Image of specimen 'M 55940 Albite' (Museums Victoria) from Siberian Federal District, Russia
Photo by Benjamin Healley, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
44
78
12
CL, CL/SEM, EDS, Reflectance, SXES
Mineral, Aluminosilicate
Alforsite Ba5 (PO4 )3 Cl
Minerals containing PO4 , Apatite (group) —
0
1
0
Unknown
Mineral, Phosphate , Orthophosphate
Alkali feldspar (Na,K)AlSi3 O8
Feldspar (group) Albite , Ferrisanidine , Kokchetavite , Sanidine , Anorthoclase , Rubicline , Sanidine, high , K feldspar
Open
Specimen of anorthoclase, from Mount Franklin, 9 km north of Daylesford, Victoria, Australia. Specimen M 24369.1, Museums Victoria
Photo by William D Birch, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
1
14
1
CL
Aluminosilicate , Subgroup
Allanite-(Ce) CaCe(Al2 FeII )[Si2 O7 ][SiO4 ]O(OH)
Allanite (group) , Minerals containing SiO4 —
Open
Allanite from Tripp Mine, Cardiff Township, Haliburton Co., Ontario, Canada
Photo by John Sobolewski (on wikimedia.org), CC-BY 3.0
1
0
1
EDS
Mineral , REE, Aluminosilicate
