We use cookies to show content based on your preferences. If you continue to browse you accept their use and installation. More information. >

FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences


Spanish message board






Newest topics and users posts
28 Mar-09:37:50 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-19:47:08 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Pete Richards)
27 Mar-16:15:44 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-15:18:59 Re: 2 unknowns co-occurring with caledonite, grand reef mine, az (Alfredo)
27 Mar-14:39:29 2 unknowns co-occurring with caledonite, grand reef mine, az (Cfrench58)
27 Mar-05:21:48 Re: the mim museum in beirut, lebanon (Mim Museum)
27 Mar-05:03:26 Re: trying to find information on rose/pink quartz and tourmaline associations. (Ning)
27 Mar-02:39:50 Re: the mim museum in beirut, lebanon (Tobi)
27 Mar-00:23:28 Re: collection of volkmar stingl (Volkmar Stingl)
26 Mar-00:53:41 Re: collection of volkmar stingl (Volkmar Stingl)
25 Mar-13:32:10 Re: collection of michael shaw (Michael Shaw)
25 Mar-00:25:58 The mizunaka collection - quartz (Am Mizunaka)
23 Mar-13:35:22 Re: collection of firmo espinar (Firmo Espinar)
22 Mar-08:32:28 Re: collection of michael shaw (Michael Shaw)
22 Mar-04:20:41 Re: the mim museum in beirut, lebanon (Mim Museum)
21 Mar-22:49:19 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-22:47:40 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-22:45:25 Re: green seam. Looks like it in a state of decay. (Ning)
21 Mar-15:34:23 Re: the mizunaka collection - quartz (Am Mizunaka)
21 Mar-14:35:08 Re: jim’s mineral collection (Jim Wilkinson)
21 Mar-14:15:36 The 4th phoenix heritage mineral show (phms) hosted by mineralogical society of arizona (m (Chris Whitney-smith)
21 Mar-04:36:10 Re: the mizunaka collection (Tobi)
21 Mar-04:11:47 Re: jim’s mineral collection (James Catmur)
20 Mar-23:34:15 The mizunaka collection - quartz (Am Mizunaka)
20 Mar-18:13:16 Re: jim’s mineral collection (Jim Wilkinson)

For lists of newest topics and postings click here


RSS RSS

View unanswered posts

Why and how to register

Index Index
 FAQFAQ RegisterRegister  Log inLog in
 {Forgotten your password?}Forgotten your password?  

Like
111802


The time now is Mar 28, 2024 14:16

Search for a textSearch for a text   

A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
Pyrite and marcasite intergrowths
  
  Index -> Micros & Macros - Images of Minerals
Like
4


View previous topic :: View next topic  
Author Message

Roger Warin




Joined: 23 Jan 2013
Posts: 1171


Access to the FMF Gallery title=

View user's profile

Send private message

PostPosted: Jul 03, 2017 13:33    Post subject: Pyrite and marcasite intergrowths  

Pyrite and marcasite intergrowths.

Pyrite microcrystals are attached to marcasite crystal in systematic orientations.
Pete Richards described intergrowths of pyrite and marcasite very similar to those observed on Moroccan specimens (The Mineralogical Record Vol. 26 March-April 1995).
On my specimen, marcasite is hidden by subsequent overgrowths of pyrite. The group resembles a fir tree.
Pete Richards says that the crystallization of pyrite is subsequent to that of marcasite, including epitactic growth of pyrite on marcasite. The pyrite forms bars. Richards's hypothesis which explains the geometric observations is that the pyrite is epitactic on an acicular marcasite crystal which is completely overgrown by the pyrite. For more information, see the Richards's article.
https://www.phy.mtu.edu/~jaszczak/SB734_05.pdf



078-Pyrite#3_R.jpg
 Mineral: Pyrite
 Locality:
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco
 Dimensions: 36 mm
 Description:
 Viewed:  8488 Time(s)

078-Pyrite#3_R.jpg



079-Pyrite_bar#2_R.jpg
 Mineral: Pyrite
 Locality:
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco
 Description:
 Viewed:  8489 Time(s)

079-Pyrite_bar#2_R.jpg



080-Pyrite_marcasite_A&B-1_R.jpg
 Mineral: Pyrite
 Locality:
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco
 Description:
 Viewed:  8521 Time(s)

080-Pyrite_marcasite_A&B-1_R.jpg


Back to top
Reply to topic Reply with quote
Like
4
   
Display posts from previous:   
   Index -> Micros & Macros - Images of Minerals   All times are GMT - 5 Hours
Page 1 of 1
    

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


All pictures, text, design © Forum FMF 2006-2024


Powered by FMF