# Madge Quarry

- URL: https://palmerdivideresearch.com/places/madge-quarry/

- Kind: Mines and quarries
- Status: Historic or vanished
- County: Douglas County, Colorado
- Point: 39.3432, -104.8547 (from Scott's 1999 trail map, with a second source (a few hundred feet))

- Updated: 2026-10-06

## What we know

Rhyolite quarry on a D&RG spur south of Castle Rock; Scott also marks O'Brien Quarry (spur 1880-1905) and Hathaway nearby.

## Where it was

'Madge Quarry (X)': Scott, Historic Trail Map of the Denver 1x2 Quadrangle (USGS I-2639, 1999, S-0106), symbol read from the reprojected sheet (good to a few hundred feet). Place Names of Colorado: Sec. 23, T8S R67W, 'Est. by 1916. RR stop on D&RGW. 5 mi S of Castle Rock.'; this point is 0.29 mile from that section's center.

Read from Glenn R. Scott's USGS historic trail map of 1999 and confirmed by a second, independent source.

## Nearby

- [Douglas](https://palmerdivideresearch.com/places/douglas/): 1.2 mi west
- [Castle Rock](https://palmerdivideresearch.com/places/castle-rock/): 2.0 mi north
- [Cedar Hill Cemetery](https://palmerdivideresearch.com/places/cedar-hill-cemetery/): 2.7 mi north
- [New Memphis](https://palmerdivideresearch.com/places/new-memphis/): 3.3 mi north
- [Tomah](https://palmerdivideresearch.com/places/tomah/): 3.4 mi southwest
- [Glade](https://palmerdivideresearch.com/places/glade/): 3.4 mi south

Source numbers (S-0000) refer to https://palmerdivideresearch.com/sources/. Compiled by Michael Christensen for Palmer Divide Research; CC BY 4.0.