Collection place
- Duck Valley Reservation, Nevada1
- Dugan Site, El Dorado County, California1
- Dukes County, Massachusetts3
- Dulac, Terrebonne, Louisiana1
- Dulce, Rio Arriba County, New Mexico7
- Dulkaninna Station, Birdsville Track, South Australia1
- Duluan, Ma-Ayon municipality, Capiz Province12
- Duluth, St. Louis County, Minnesota2
- Dumba, Katanga province, Democratic Republic of the Congo2
- Dumbéa commune, South Province, New Caledonia9
- Dunatina Valley, Eastern Highlands Province, Papua New Guinea64
- Duncan's Landing, Duncan Point, Sonoma County3
- Duncans Point, Sonoma County, California10
- Dundisikri, Narmada valley, Madhya Pradesh36
- Dundo, Angola16
- Dune site, Duluoris, Baja California1
- Dunes at beach near sloughs northeast of hills, La Choyo, Sonora, Mexico29
- Dunes at northern end of Laguna Salada, Mexicali municipality, Baja California2
- Dunes on Las Palmas Bay northwest of Agua Amarga, La Paz municipality, Baja California Sur1
- Dunes on northwestern side of Laguna Salada, Mexicali municipality, Baja California3