Where I Lost my Hat.

I spent the afternoon bushwhacking at Ojito near the bike trails. I explored some low cliffs along what seems to be a former stream bed, now dry.  A rough location approximation is HERE on Google maps. You will see sort of a diamond shaped sloping mesa with a low cliff to the south and a higher one to the north. The rock seems to mostly be sandstone but mixed and very pock-marked in places. It doesn’t look like much as you approach the lower edge (south).

Click on these pictures for full size.

The cattle tracks will lead to an easy way up over the low cliff to the sloping top of the mesa.

This is a slab of rock that is about table sized that apparently fell from the top of the low sandstone cliff. It is too big to move.

There are fossils of something —  maybe crinoid or maybe vertebrae. There are other undefinable fossils. Since this was the floor of the inland sea, I’m guessing crinoid shafts. There are two or maybe three traces. (Click to enlarge.)

As often happens, I will stumble upon something that is very odd. This time it is a very peculiar jointed/cracked section of exposed bedrock. It looks like mud or silt that curled up when dried after a wet period. 

The rectangular sections are maybe 15-20 inches to a side, much larger than typical mud flakes. It looks like a natural tiled floor surface. I have never seen that type of jointing and cracking of bedrock before. 

It takes a while to walk up hill to the northern edge and the higher cliff face on the north edge. That is where I lost my hat — a wind gust took it over the edge of the cliff. No way to get it. It was a good hat.

Anyway, while sitting on a rock and moping about my hat I found what I think will turn out to be a conical spiral shell fossil. It is only partly exposed but it looks promising. 

The view from the top is impressive…

I ran out of time so headed back home but the area looks interesting. The main road climbs up a slope some distance to the south and may top out a half mile along on the same rock strata as the top of the cliff.

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Spare Time Prospecting Along Cabresto Canyon in Northern New Mexico

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I spent a week up at Red River, NM — high up in the Sangre de Cristo Mountains. My intention was to spend my time fishing the Red River and the Cimarron River — and any other spots I could find. One thing that is awkwardly noticeable as you approach Red River from the west (via Cuesta) is the humongous Molybdenum mine — Moly for short. No one can pronounce Molybdenum accurately more than once so Moly is the term of choice.  The mine is an open pit but you can’t actually see into it because of the huge tailing piles along the highway. Those waste piles have leached acidic drainage into the Red River and made it a dead zone for many years. It is now a Super Fund site, and it is coming back over time. The fish in that stretch of the river fled or died out but I saw some people fishing there so maybe it is supporting natural and healthy flora and fauna in the stream, which will support the fish.  Anyway…this epistle is not about fishing but rather mining.

A Rockhound friend came up to visit for a couple days and we went off to explore the backcountry mining district in Cabresto Canyon. Why there? It was a little out of town and not very busy. The Red River mining district goes back over the 175 years that it has been in the US and perhaps a couple hundred years before that. It was noted for gold, silver, lead, copper, moly, and a number of other ores. Mining continued in the area until recently and some mines are still active.

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USGS map found on thediggings.com website.

There are several hundred inactive mining claims in and around Red River — too many to show in the gray areas.  We followed the Cabresto Creek canyon drainage system from around 9,000 feet up to 10,700 feet in elevation and into the Bitter Creek area. We identified six mine sites. We found one unidentified mine located below Cabresto Lake, the Cabresto Canyon Mine, Hornet Lead Prospect, Silver King Prospect, The Governors Gold Mine (Spanish Main), the Midnight Gold Mine, and Cashier Gold Mine. The last two have been essentially cleared by the US Forest Service for environmental reasons. The others have identifiable tailings, prospect holes or shafts. Tailings piles of over 100-150 years old are largely overgrown. 

We had the benefit of flying photo-drone to gain some photographic views of the higher slopes and different angle perspectives on some of the mining sites. The actual mine shafts or diggings were often too far up the mountain slope for easy access.

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The area is either a geologist’s nightmare or a geologist’s heaven — depending on the intent and skill level. The wide variety of mineral content makes identification difficult. We found some ore that strongly reacted on a metal detector. Much of what we found had biotite mica inclusions, chalcopyrite and some interesting quartz, lead, and even tourmaline samples. Further identification will have to wait.

The Silver King Prospect seems to have been inactive and overgrown on a steep and ravined hillside. I have not found a date associated with the mine. We found some interesting surface mineral specimens and the site seems to be frequently visited by hikers. The Hornet and Cabresto mine sites were identifiable only due to some noticed tailing pile outcrops on the hillside. They do not seem much accessible beyond that.  The unidentified mine site was found by tailings, but the actual mine site is farther up the hill. This site was near the road and had a very broad range of rock and mineral types. Mica was most abundant.

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The Governor’s Gold Mine is also known as the Spanish Main Prospect. The mine apparently dates back to the Spanish colonial period in the 1600s to the early 1800s. There is a mine shaft about 20 feet up off of the road that is enterable for some distance.  The story associated with the mine is that the early miners sent $10,000 each month to the Queen of Spain as a royal share of the mine’s output. That is hard to believe looking at it now. We found evidence of prospect holes and diggings and the metal detector reacted to a number of surface ore samples. It is hard to know when any of the visible activity evidence took place.

The Midnight Mine and Cashier Mine are close together in an open parklike area at almost 10,700 feet. The Midnight Gold Mine operated at a profit from about 1897 until 1900 when it was abandoned. There are photographs of a respectable the mining camp named Midnight City existing on the flat area just below the mine and there are some possible remnants of building foundations. The site is littered with nails. The associated mining camp and structures were left on the site and still evident in the 1960s. All of that, including the smelter and tailing piles have been removed and the shaft entrance filled in by the USFS. The townsite is now mostly a boggy wetland.

The Cashier mine has even less remaining of its active period. There are traces of old wagon tracks but not much else. The ghost towns have been hauled away or melted into the terrain.

We chose not to explore the mines closer in toward Red River but there are many and some apparently still have relics or structural evidence. That will be another year. Red River is a skiing and summer tourist town blessed or infected by Texans, depending on your point of view. The local entrepreneurs offer guided jeep tours into the mountains chock full of Texans of every age and gender. They scowled and did not seem to be enjoying themselves whenever we encountered them. The tourists also can rent an off-road vehicle and cruise through the unpaved and deeply rutted mountain roads at breakneck speed. Watch for oncoming careening Texans in off-road vehicles.

For more information on the general area look here…

Click to access Circular18.pdf

Click to access Scenic_Trip-02_Reprint.pdf

Light at the End of the Tunnel

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It was a beautiful day, sunny but with a strong wind — like many spring days in New Mexico. Our primary destination was the Gilman tunnels in the Jemez Mountains in the Rio Guadalupe canyon. The temperature was about 65 degrees up in the mountains – maybe ten degrees cooler than in town. I have been there a half-dozen times, but thus trip found the Rio Guadalupe in full flow roaring through the gorge. It is normally a trickle of water but we have had a monumental snowfall total this past winter and the warm temperatures have melted it faster than usual.

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The approach up through the canyon is one of the prettiest in New Mexico. The canyon wall is a geologist’s dream — layer upon layer.

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Rio Guadalupe is a local trout stream that flows through several canyons for about five miles distance higher up at the junction of the Rio de las Vacas and Rio Cebolla. Trout fishing isn’t likely in the runoff like today.

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There are two tunnels that were built as part of a local railroad line (Santa Fe Northwestern Railway) that brought timber from the mountains down to a sawmill in the town of Bernalillo in the early 1900s. 

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This is all hard rock– granite tinted red with feldspar and shining quartz. The hillside above the road is steep and unstable enough that large rocks will tumble down on to the roadway. We saw several that were pushed to the side. This one was too heavy to move easily and it wasn’t obstructing traffic on the single lane road.

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The Rio Guadalupe is most often a lower volume flow with a few cascades and a few pools and is fairly popular for fly fishing. The steep slope down to the water makes it difficult. I have yet to fish it but will plan on trying it in the near future. Right now, it is not fishable. Much of it is special regulated fishing water.

There are some easier access points…

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Movie buffs might wonder where they have seen these tunnels before. They have served as locations for several films. The last one was Russell Crowe’s western “3:10 to Yuma”, a remake of a Glenn Ford classic 1957 western. The tunnels appear in the 2007 movie in a couple scenes. This is one of them: https://youtu.be/Aru0-P9GMPk  .

The Jemez Mountains are considered a “Sky Island” — an isolated mountain ecosystem surrounded by desert. It is mostly volcanic, being close to the Valles Caldera National Preserve. 

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