この問題で

June 2021

LABRADORITE A Feldspar Mineral with a Rainbow Inside

Collectors often dig labradorite as a colorful rock, but it is actually a mineral, not a rock. It is one of a half dozen varieties of feldspar divided into two groups that make up the crust of the earth. One group is the potassium feldspars, including microcline. The other group is a plagioclase feldspar, including labradorite.

7 mins

GEOLOGY IN THE NATIONAL PARKS

The Science Behind the Scenery

10+ mins

New Discoveries in Newfoundland

SCIENTIFIC RESEARCH AND ROCKHOUNDING HELP TO UNCOVER FASCINATING TREASURES AND HISTORY

6 mins

LEARNING FROM A Legend

VISITS TO LUCKY STRIKE MINE PRODUCE GREAT MEMORIES AND MATERIAL

8 mins

GOLD MINING IN DAHLONEGA, GEORGIA

History and Panning Adventures

5 mins

The Golden Iron Mineral

PYRITE’S MANY CRYSTAL FORMS KEEP COLLECTORS FASCINATED

8 mins

“ TOUCH THE MOON ” WITHOUT LEAVING EARTH

Discovering Similarites Between Space and the Upper Midwestern U.S.

10+ mins

Idaho Star Garnet

Brilliant colors enhance the beauty and add to the value of many of our gemstones, especially those that are clear or translucent. And I like any color… as long as it is red. For that reason, the blood-red ruby is about my favorite gemstone. And in museums around this country and in Europe I have seen carefully cut cabochons containing startling six-rayed stars that seem to slide over the surface of the stone as it is rotated in the light. It is no wonder that, for hundreds of years, the star ruby has been one of the favorite stones of royalty.

4 mins

THE NICKEL BEHIND THE NICKEL

The word “nickel” is a homonym with two distinct meanings. It refers to both our five-cent coin and an element. Everyone is familiar with the coin, but not necessarily with the element.

3 mins

A New View of Mineral Museums

This year of 2021 certainly started out to be disappointing for many mineral collectors. We were all looking forward to a host of mineral-related activities. Instead, few mineral shows and mineral activities on the calendar remain, so the first months of this year were devoid of organized mineral activity.

6 mins

Rock&Gem Magazine の記事をすべて読む

Rock&Gem Magazine Description:

Rock & Gem has been the leading magazine for the lapidary and mineral hobbyist. Not a trade journal and not a scientific dissertation, it speaks to the average rock hound, providing just the right blend of entertainment and satisfying information. Armchair hobbyists and diehard diggers alike will find something to enjoy in each issue.

Lifetime hobbyist and Carnegie Award winner Bob Jones heads up a group of experienced and knowledgeable contributors. Bob’s light - hearted style brings readability to in-depth articles on minerals, classic deposits, and collecting trends. His Frugal Collector series helps collectors learn to identify mineral bargains, and his affiliation with the Tucson Gem & Mineral Society provides a behind-the-scenes look at the year’s biggest and best mineral show and sneak previews of the show’s theme and featured exhibits.