Enough Rocks Already


Even before our recent trip to Germany, I think I would have understood that “Verboten” meant I was forbidden from collecting any rocks in this area. So then how was it that I came home Saturday hauling a bucket of rocks up the stairs to our apartment? Well, one of the advantages of membership in the Albuquerque Gem and Mineral Club is the opportunity to go on field trips such as this one that was a visit to a mining claim owned by a member of the club. With his permission and guidance our collecting was allowed.

A number of the group members elected to go on the guided tour of one of the underground workings.

I was more interested in exploring the geology of the area from above ground where there is plenty of fresh air, sunshine and blue sky. This was a part of New Mexico we had passed by on travels across the vast desert just north of White Sands Proving Grounds but we never had occasion to stop there. I couldn’t picture what the area would look like where we would be collecting minerals. It was several miles off the highway, jolting across rutted dirt roads, and as we approached I noticed a range of mountains ahead of us.

As I later learned, the Blanchard Mine is on the western flank of the Sierra Oscura Mountains, an area we never would have thought to explore for a hike because of its remoteness and proximity to White Sands Missile Range property. The base of the mining claim area is accessible without a high clearance vehicle, but the last 2 miles of road up the ridge required four-wheel drive and steel nerves on the narrow ledges. I parked my car at the base and rode up to the top in a more suitable vehicle with some other club members.

About halfway up. My car is down there at the bottom with several others.
An abandoned ore bin left from commercial mining days.
One of the collecting spots at the top.
A fluorite sample I collected.
Flourite crystals also form in cubic shapes.
Barite forms bladed crystals.
Imbedded black cubes are galena (lead).
The bluish green minerals are formed by weathering of copper but we didn’t know which of several it might be.

A little bit of everything from the collection.

The club member who owned the mine claim gave us an informative talk before we began collecting. I learned a lot about the history of mining in this area and about the geology. One of the most interesting facts was the difference between a patented and unpatented mining claim. If a mining claim is patented then the owner has deed to the land, as well as owning the mineral rights. Unpatented mining claims are usually located on land owned by the federal government. The owner of a patented claim can enforce “no trespassing” on the land, as opposed to this mine which was unpatented and located on BLM land. As the sign said, the public could be prevented from collecting on the site, but anyone could come out and explore the area. That’s good to know for the future when we might want to do some hiking instead of rock collecting. We have limited space in our apartment so I need to focus on enjoying hikes in wonderful, rocky New Mexico, instead of bringing home these irresistible specimens that I’m then struggling to find room for.

Rockin’ It

I think I have a love-hate relationship with rocks. I was hating every single one of the rocks that littered the countless ruts in the maze of dirt roads we were navigating in our attempt to find a trail that started at an abandoned campground in the Manzano Mountains. I winced at every thud and jolt under the body of our car as we inched forward at a snail’s pace. No one in their right mind would take a Toyota Corolla on these roads. Lee could tell I was greatly annoyed at having been persuaded yet again to do one of these “exploratory” hikes.

But after two hours, when we finally got to the base of the mountains and started up the trail, all was forgiven. I was no longer upset with Lee and I was absolutely loving the rocks I was seeing in this part of the mountains. I was pretty sure they were metamorphic rocks, which we don’t see as often as igneous and sedimentary rocks. The intense heat and pressure that’s required to form metamorphic rocks gives many of them fascinating wavy layers in patterns referred to as foliation or schistosity. I could have hauled home pounds of beautiful specimens but limited myself to a few photos. Rocks are meant to stay where God put them for us to enjoy and cars are meant to stay on the paved roads. Me and rocks will get along just fine if we both stay where we belong.

On the Trail

Enjoying Schistocity