Johnstown
Seen to fall in 1924 in the United States · 40 kg recovered · Diogenite
Johnstown is the heaviest of the eight Diogenite falls. It is the only Diogenite fall recorded in the United States. Berthoud came down only 12 km to the south-west, in 2004.
- Recorded position
- 40.350° N, 104.900° W
The map is centred on Johnstown. Rings every 100 km; numbers match the table below.
Nearest recorded falls
Within 250 km lie five other recorded falls.
| # | Fall | Year | Class | Recovered | Distance |
|---|---|---|---|---|---|
| 1 | Berthoud | 2004 | Eucrite-mmict | 960 g | 12 km south-west |
| 2 | Denver | 1967 | L6 | 230 g | 63 km south |
| 3 | Elbert | 1998 | LL6 | 681 g | 126 km south |
| 4 | Torrington | 1944 | H6 | 259 g | 200 km north |
| 5 | Canon City | 1973 | H6 | 1.4 kg | 211 km south |
| 6 | Sioux County | 1933 | Eucrite-mmict | 4.1 kg | 269 km north |
What Diogenite means
Diogenite is the label for a diogenite, a rock rich in the mineral orthopyroxene from deeper in the same crust as eucrites. The nearest other Diogenite fall is Ellemeet in the Netherlands, 7,691 km away. In date order among Diogenite falls, the one before Johnstown is Roda (1871, Spain) and the one after is Ellemeet (1925, the Netherlands).
Johnstown in the United States’s record
In date order Johnstown is number 71 (shared with a fall of the same year) of the 146 falls recorded in the United States, which run from 1807 to 2012. By recovered mass Johnstown comes 20th of 146 there. The fall recorded before Johnstown in the United States is Forksville (1924); the next is Success (1924).
The 1920s
Johnstown is one of 68 falls dated to the 1920s. Elsewhere, the record lists seven other falls in 1924, among them Olivenza in Spain, Béréba in Burkina Faso, Santa Isabel in Argentina.