BLACK FLUORITE
Composition: CaF2 · Hardness: 4 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination.
CALICHE ON BASALT
Composition: CaCO3 · Hardness: 3 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination. From Canary
COLUMNAR CALCITE
Composition: CaCO3 · Hardness: 3 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination.
HACKMANITE
Composition: Na8(Al6Si6O24)Cl2 · Hardness: 5.5 - 6 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination. From Pakistan.
KUNZITE
Composition: LiAl[Si2O6] · Hardness: 6.5 - 7 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination.
WOLLASTONITE
Composition: CaSiO3 · Hardness: 4.5 - 5 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination.
YOOPERLITE
Composition: Na8(Al6Si6O24)Cl2 · Hardness: 5 - 6 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination.
YOOPERLITE
Composition: Na8(Al6Si6O24)Cl2 · Hardness: 5 - 6 (Mohs scale) · UV exposed: LW 365 nm
Notes: Photograph taken under controlled UV illumination.