Category: geology

Fluorite

Fluorite

Locality: Boltsburn Mine, Rookhope, Weardale, County Durham, United Kingdom

Size: 11 × 8.9 × 7.3 cm

Apatite

Apatite

Locality: Ipira, Bahia, Brazil

Size: 8.3 × 4.9 × 9.6 cm

Wulfenite

Wulfenite

Locality: Red Cloud Mine, La Paz County, Arizona, United States of America

Size: 2.9 × 2.7 × 2.3 cm

Smithsonite

Smithsonite

Locality: Kamariza Dump, Agios Konstantinos, Lavrion, Attiki Prefecture, Greece

Size: 2.4 × 2.3 × 1.7 cm

Fluorite

Fluorite

Locality: Bergmännisch Glück Mine, Frohnau, Erzgebirge, Saxony, Germany

Size: 7.8 × 6 × 3.9 cm

Beryl

Beryl

Locality: Erongo Mountains, Erongo Region, Namibia

Size: 3.4 × 1.6 × 1.7 cm

Amethyst

Amethyst

Locality: Mamuju Area, Sulawesi Barat Province, Sulawesi Island, Indonesia

Size: 4.9 × 3.7 × 2.7 cm

Andradite

Andradite

Locality: Jebel Bou-Agrao, Khenifra Province, Meknès-Tafilalet Region, Morocco

Size: 4.2 × 3 × 2.9 cm

Amethyst and quartz by wplynn

Amethyst and quartz

Amethyst and quartz by wplynn

Mexican Mariposa Calcite: rock1 sideA – UVab…

Mexican Mariposa Calcite: rock1 sideA -  UVabc

Mexican Mariposa Calcite: rock1 sideA – UVabc by Cran Cowan

Via Flickr:

From Mina Buena Tierra, located in the Santa Eulalia District, Aquiles Serdan, Chihuahua, Mexico comes this 6" wide specimen.

Contains:
Calcite (FL Yellow,Pink/Orange >UVabc)

Shown under Uvabc light.

Key:
WL = White light (halogen + LED)
FL = Fluoresces
PHOS = Phosporescent
UVa = 368nm (LW), UVb = 311nm (MW), UVc = 254nm (SW)
’>’ = “stimulated by:”, ’!’ = “bright”, ’~’ = “dim”

Obtained at Obsidian Days 2013 – Earth’s Treasures

Rock2 side A

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18 Watt Triple Output UV lamp from Polman Minerals – Way Too Cool UV lamps