David K. Joyce

Recent Activities -Keweenaw Week, Page Two

Here are some more images from my recent trip to the Keweenaw Peninsula!

 

Copper, Quincy Mine, 14.0cm acrossRecent Activities -Keweenaw Week, Page Two

Copper, Quincy Mine, 14.0cm across
What an interesting specimen from this famous mine! All copper in an interesting sharp crystal aggregate.

Copper, Quincy Mine, 2.0cm acrossRecent Activities -Keweenaw Week, Page Two

Copper, Quincy Mine, 2.0cm across
This crystal is small but potent! Look at the forms on this crystal. Amazing!

Silver, Copper, Wolverine Mine, 6.0cm acrossRecent Activities -Keweenaw Week, Page Two

Silver, Copper, Wolverine Mine, 6.0cm across
Specimens like this are wonderful. Relatively sharp silver crystals on native copper, often oriented. An exemplary example.

Silver, Calcite, South Hecla Shaft #2, 10.0cm tallRecent Activities -Keweenaw Week, Page Two

Silver, Calcite, South Hecla Shaft #2, 10.0cm tall
We often see copper crystals associated with calcite but less so silver crystals. It is odd on this one though, that it seems to be a group of silver crystals, although the colouration of the calcite crystals indicates they are included with copper? There is copper in the specimen, as well as silver? What is going on!?

Silver, Copper, Kearsarge Mine, 14.0cm acrossRecent Activities -Keweenaw Week, Page Two

Silver, Copper, Kearsarge Mine, 14.0cm across
Wow! Not a great photograph but wonderful darkened silver crystals on native copper.

Silver, Wolverine Mine, 3.0cm acrossRecent Activities -Keweenaw Week, Page Two

Silver, Wolverine Mine, 3.0cm across
A beautiful little cluster of sharply twinned silver crystals.

Silver ChiselingRecent Activities -Keweenaw Week, Page Two

Silver Chiseling
According to lore, some copper miners used to work on their own after hours chiseling silvercrystals (NOoooooo!!!!) off of native copper in order to sell the silver for an additional wage. I have seen examples of this kind of handiwork where there is a just a chisel-mark smear of silver adhering to a copper lump where once there was a nice crystal. :(

Zircon, Smart Mine, Brudenell Twp, Ontario, 6.0cm acrossRecent Activities -Keweenaw Week, Page Two

Zircon, Smart Mine, Brudenell Twp, Ontario, 6.0cm across
The A.E. Seaman Museum is NOT just about copper, silver and minerals of Michigan. The collection also has excellent specimens of various minerals from around the world. Here is a good example that I lust after. A dark red geniculate twin of zircon from the famous Smart Mine back home in Ontario. Pretty darn rare!!

Quincy SwapRecent Activities -Keweenaw Week, Page Two

Quincy Swap
It just so happened that a local group holds an excellent swap meet during Keweenaw Week. Almost every table was loaded with local gems and minerals. Some excellent copper crystal specimens were available here!

Copper, Central Mine, 15.0cm acrossRecent Activities -Keweenaw Week, Page Two

Copper, Central Mine, 15.0cm across
Wow! We don't see specimens like this very often! A large cluster of sharp copper crystals up to 30mm or so in size.

Copper, Calcite, Quartz, PumpellyiteRecent Activities -Keweenaw Week, Page Two

Copper, Calcite, Quartz, Pumpellyite
I managed to pick this one up at the mineral show that CCRMC puts on at the end of Keweenaw week. Such a classic Keweenawan copper specimen! The copper is enclosed in air tight calcite which prevents it from tarnishing like the other copper outside of the calcite. Just great.

Copper, Central Mine, 6.4cm tallRecent Activities -Keweenaw Week, Page Two

Copper, Central Mine, 6.4cm tall
This specimen has had most of the calcite removed to reveal excellent divergent groups of copper crystals. Picked this one up at a copper sale on a fellow's front lawn on the main street through Laurium, MI.