Amblygonite
LiAl(PO4 )F
Amblygonite (group) , Minerals containing PO4
—
Open
Faceted amblygonite gem, from Ceará, Brazil. Specimen M 36903, Museums Victoria.
Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
1
4
1
Reflectance
Mineral, Phosphate , Orthophosphate
Amblygonite (group)
LiM III (PO4 )(OH,F), M =Al,Fe
—
Tavorite , Amblygonite , Montebrasite
4
16
5
Reflectance
Orthophosphate , Group , Phosphate
Amesite
Mg2 Al(AlSiO5 )(OH)4 , Mg2 Al(SiAl)O5 (OH)4
Minerals containing OH , Serpentine (subgroup)
—
Open
Amesite specimen from Chester, MA, USA
Photo by Burton Litman, via Smithsonian National Museum of Natural History
0
1
0
PL/XL
Hydroxide , Mineral, Aluminosilicate
Amethyst
SiO2
Quartz
—
Open
Amethyst from Guerrero, Mexico
Photo by Chip Clark, Smithsonian Institution. CC0
0
1
0
PL
Variety , Simple oxide
Ammonium bromide
NH4 Br
—
—
0
2
0
IR
Halide , Ammonium , Compound
Ammonium chloride
NH4 Cl
—
—
0
2
0
IR
Halide , Ammonium , Compound
Ammonium fluoride
NH4 F
—
—
0
2
0
IR
Halide , Compound , Ammonium
Amphibole
AX2 Z5 ((Si,Al,Ti)8 O22 )(OH,F,Cl,O)2
—
Ferro-ferri-holmquistite , Scandio-winchite , w(OH, F, Cl)-dominant amphibole , Clinoamphibole
Open
Tremolite from Mt Ibity, Antananarivo Province, Madagascar
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
2
58
12
EDS, Reflectance
Silicate , Supergroup
Analcime
NaAlSi2 O6 ·H2 O
Minerals containing H2O , Zeolite (group)
—
Open
Analcime on microcline, from Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Photo by Modris Baum (via Wikimedia Commons), Public Domain
1
7
0
IR, PL, PL/Laser
Mineral, Hydrated , Aluminosilicate
Anatase
TiO2
Titanium dioxide
—
5
2
0
PL
Mineral, Simple oxide
Andalusite
Al2 SiO5
Andalusite (subgroup)
—
1
0
0
—
Mineral, Aluminosilicate
Andersonite
Na2 Ca(UO2 )(CO3 )3 ·5-6H2 O
Minerals containing H2O , Minerals containing CO3
—
Open
Andersonite from Repete Mine, Blanding, San Juan County, Utah, USA
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
1
12
0
PL
Carbonate , Mineral, Hydrated , Uranyl
Andesine
(Na,Ca)(Si,Al)4 O8
Plagioclase
—
Open
Photo by Dave Dyet http://www.shutterstone.com, http://www.dyet.com, Public domain
3
2
1
EDS
Aluminosilicate , Variety
Andradite
Ca3 FeIII 2 (SiO4 )3
Minerals containing SiO4 , Andradite-Grossular (series)
—
Open
Andradite single crystal (4.2 cm), from Sibinndi, Nioro du Sahel Circle, Kayes Region, Mali.
Photo by Didier Descouens (via Wikimedia Commons), CC-BY-SA 4.0
7
0
1
SXES
Mineral, Silicate
Andradite-Grossular (series)
Ca3 FeIII 2 (SiO4 )3 ‒ Ca3 Al2 (SiO4 )3
Garnet
Andradite , Grossular
0
5
4
CL, EDS, SXES
Silicate , Series