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1 - Wulfenite (Min)
2 - Thortveiti (Min)
3 - Boracite (Min)
4 - Challacoll (Min)
5 - Veszelyite (Min)
6 - Glaucoceri (Min)
7 - Cobaltaust (Min)
8 - Siegenite (Min)
9 - Ludlamite (Min)
10 - Newberyite (Min)
11 - Santarosai (Min)
12 - Tapiolite- (Min)
13 - Tyuyaminit (Min)
14 - Tantalite- (Min)
15 - Gold (Min)
16 - Native Syl (Min)
17 - Hubnerite (Min)
18 - Weeksite w (Min)
19 - Rockbridge (Min)
20 - Cuprite (Min)
21 - Azzurrite (GMi)
22 - Tetrahedri (GMi)
23 - Titanite (GMi)
24 - Vesuvianit (Rol)
25 - Clinoclase (Rol)
26 - Fluoro-ede (Rol)
27 - Meneghinit (Rol)
28 - Halotrichi (Rol)
29 - Dioptase x (Rol)
30 - Stibnite, (Rol)
31 - Cinnabar, (Rol)
32 - Sylvanite (Rol)
33 - Withlockit (Rol)
34 - Vesuvianit (Rol)
35 - Acanthite (Rol)
36 - Quartz (Rol)
37 - Roggianite (Rol)
38 - Libethenit (Rol)
39 - Langite (GMi)
40 - Cuprian ad (GMi)

Weeksite with Carnotite - Anderson Mine, Date Creek Basin, Yavapai County, Arizona, USA (#:MINS8185)

Yellow weeksite and orange carnotite xls on rhyolite matrix.

Formula :
(K,Na)₂[(UO₂)₂/Si₅O₁₃] * 3 H₂O
System: orthorhombic Hardness:1-2 Rarity:not common
Strunz id:VIII/H.37-10 - SILICATES
Name origin: Named in 1960 by W. F. Osterbridge, Mortimer Hay Staatz, Robert Meyrowitz, and A. M. Plummer in honor of Alice Mary Dowse Weeks [August, 26, 1909 Sherborn, Massachusetts, USA - August 29, 1988 Bryn Mawr, Pennsylvania, USA], mineralogist for the United States Geological Survey and later professor of mineralogy, Temple University (Philadelphia, USA).