http://wpsites.net/wordpress-themes/custom-page-template-with-genesis-loop-you-can-modify/

custom_loop.php

<?php

/*
Template Name: Custom Loop
*/


remove_action( 'genesis_loop', 'genesis_do_loop' );
add_action( 'genesis_loop', 'custom_query' );
function custom_query() {
    global $paged;
    global $query_args;
   
    $args = array(
        'post_type'      => 'portfolio',
        'posts_per_page' => '6',
        'post_status'    => 'publish',
        'paged'          => $paged,
        'orderby'        => 'rand' 
    );
    
	

	//* Remove the entry meta in the entry header
	remove_action( 'genesis_entry_header', 'genesis_post_info', 5 );

	
	//* Remove the entry meta in the entry footer
	remove_action( 'genesis_entry_footer', 'genesis_entry_footer_markup_open', 5 );
	remove_action( 'genesis_entry_footer', 'genesis_post_meta' );
	remove_action( 'genesis_entry_footer', 'genesis_entry_footer_markup_close', 15 );
	
	echo '<div class="communities">';
	genesis_custom_loop( wp_parse_args($query_args, $args) );
	echo '</div>';

}

genesis();